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GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Central Africa
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Congo Democratic Republic (1)
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Rwanda (1)
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East Africa
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Malawi (3)
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Mozambique (4)
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Zambia (2)
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Limpopo Belt (1)
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Madagascar
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Antananarivo Madagascar (3)
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North Africa
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Egypt
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Eastern Desert (3)
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Morocco (1)
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Nubian Shield (3)
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Southern Africa
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Kaapvaal Craton (2)
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Namibia (12)
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South Africa
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Eastern Cape Province South Africa
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Merensky Reef (1)
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Transvaal region (3)
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Japan
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Korea
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Atlantic Ocean
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Ontario
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Sudbury igneous complex (3)
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Sudbury Structure (2)
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Thunder Bay District Ontario
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Quebec
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Abitibi County Quebec
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Chibougamau Quebec (1)
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Monteregian Hills (3)
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Montreal and Jesus Islands County Quebec
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Mont-Saint-Hilaire Quebec (4)
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Nunavut
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Baffin Island (2)
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Western Canada
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British Columbia
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Northwest Territories (6)
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Russian Federation
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Krasnoyarsk Russian Federation
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Murmansk Russian Federation
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Primorye Russian Federation (1)
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Tajikistan
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Ukraine
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Urals
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Elba (10)
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Europe
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Alps
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Eastern Alps
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Central Europe
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Czech Republic
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Germany
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Hungary
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Poland
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Slovakia
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Gotthard Massif (1)
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Swiss Alps
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Murmansk Russian Federation
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Pyrenees
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Highland region Scotland
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Mediterranean Sea
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Coast plutonic complex (2)
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Shuswap Complex (1)
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Oceania
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Oslo Rift (2)
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Pacific Ocean
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South Pacific
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PACMANUS hydrothermal field (1)
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West Pacific
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PACMANUS hydrothermal field (1)
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United States
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Alaska
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Arkansas
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California
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Central California (5)
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Madera County California (3)
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Colorado
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Idaho
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Maine
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Oxford County Maine (9)
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Sebago Batholith (4)
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Maryland (1)
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Minnesota
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Duluth Complex (2)
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Missouri (1)
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Montana
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Boulder Batholith (2)
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Granite County Montana (1)
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Missoula County Montana (2)
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Nevada
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Elko County Nevada
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Lander County Nevada (1)
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Lyon County Nevada
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Nye County Nevada
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Yucca Mountain (1)
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Pershing County Nevada (1)
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New Hampshire
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Carroll County New Hampshire
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Grafton County New Hampshire (1)
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New Jersey
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New Mexico
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Grant County New Mexico (1)
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Taos County New Mexico
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Questa Caldera (1)
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New York
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Adirondack Mountains (3)
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North Carolina (1)
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South Carolina
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Edgefield County South Carolina (1)
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Texas
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Llano County Texas (1)
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Llano Uplift (1)
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Mason County Texas (1)
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U. S. Rocky Mountains
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Utah
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Juab County Utah (1)
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Thomas Range (1)
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Virginia
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Washington
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Golden Horn Batholith (6)
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Okanogan County Washington (5)
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Western U.S. (1)
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Wisconsin
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Sauk County Wisconsin
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Shawano County Wisconsin (1)
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Wyoming
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Yellowstone National Park (2)
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White Mountains (1)
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Woodlark Basin (1)
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commodities
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construction materials
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corundum deposits (1)
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gems (30)
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metal ores
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lead-zinc deposits (4)
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silver ores (14)
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tantalum ores (12)
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tellurium ores (2)
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thorium ores (2)
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zirconium ores (3)
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mineral deposits, genesis (122)
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mineral exploration (46)
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petroleum
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phosphate deposits (1)
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placers (5)
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quartz crystal (2)
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ruby (1)
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elements, isotopes
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boron
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B-11/B-10 (6)
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carbon
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C-13/C-12 (13)
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chemical ratios (4)
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halogens
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bromine (1)
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chlorine (4)
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fluorine (24)
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iodine (1)
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hydrogen
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D/H (13)
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deuterium (4)
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incompatible elements (2)
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isotope ratios (88)
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isotopes
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radioactive isotopes
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Cs-137 (1)
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Pb-206/Pb-204 (8)
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Pb-207/Pb-204 (6)
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Pb-208/Pb-204 (3)
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Ra-226 (1)
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Rb-87/Sr-86 (3)
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Sm-147/Nd-144 (4)
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Th-230 (1)
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U-238 (1)
-
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stable isotopes
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Al-27 (2)
-
B-11/B-10 (6)
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C-13/C-12 (13)
-
D/H (13)
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deuterium (4)
-
Hf-177/Hf-176 (4)
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Li-7/Li-6 (3)
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N-15/N-14 (1)
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Nd-144/Nd-143 (23)
-
O-18/O-16 (38)
-
Pb-206/Pb-204 (8)
-
Pb-207/Pb-204 (6)
-
Pb-207/Pb-206 (2)
-
Pb-208/Pb-204 (3)
-
Rb-87/Sr-86 (3)
-
S-34/S-32 (10)
-
Sm-147/Nd-144 (4)
-
Sr-87/Sr-86 (32)
-
-
-
large-ion lithophile elements (2)
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Lu/Hf (2)
-
metals
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actinides
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thorium
-
Th-230 (1)
-
-
uranium
-
U-238 (1)
-
-
-
alkali metals
-
cesium
-
Cs-137 (1)
-
-
lithium
-
Li-7/Li-6 (3)
-
-
potassium (6)
-
rubidium
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Rb-87/Sr-86 (3)
-
-
sodium (10)
-
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alkaline earth metals
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barium (2)
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beryllium (28)
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calcium (7)
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magnesium (2)
-
radium
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Ra-226 (1)
-
-
strontium
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Rb-87/Sr-86 (3)
-
Sr-87/Sr-86 (32)
-
-
-
aluminum
-
Al-27 (2)
-
-
antimony (1)
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arsenic (1)
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cadmium (1)
-
chromium (2)
-
copper (3)
-
gold (6)
-
hafnium
-
Hf-177/Hf-176 (4)
-
-
iron
-
ferric iron (7)
-
ferrous iron (5)
-
-
lead
-
Pb-206/Pb-204 (8)
-
Pb-207/Pb-204 (6)
-
Pb-207/Pb-206 (2)
-
Pb-208/Pb-204 (3)
-
-
manganese (15)
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molybdenum (1)
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niobium (23)
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platinum group
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platinum ores (7)
-
-
precious metals (5)
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rare earths
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cerium (8)
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dysprosium (1)
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europium (2)
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gadolinium (1)
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lanthanum (4)
-
neodymium
-
Nd-144/Nd-143 (23)
-
Sm-147/Nd-144 (4)
-
-
samarium
-
Sm-147/Nd-144 (4)
-
-
scandium (10)
-
terbium (1)
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ytterbium (1)
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yttrium (25)
-
-
tantalum (19)
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tin (9)
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titanium (9)
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tungsten (2)
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vanadium (3)
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zinc (2)
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zirconium (9)
-
-
nitrogen
-
N-15/N-14 (1)
-
organic nitrogen (1)
-
-
oxygen
-
O-18/O-16 (38)
-
-
phosphorus (6)
-
silicon (1)
-
sulfur
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S-34/S-32 (10)
-
-
trace metals (2)
-
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fossils
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bacteria (2)
-
-
geochronology methods
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(U-Th)/He (2)
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Ar/Ar (31)
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fission-track dating (2)
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K/Ar (3)
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Lu/Hf (2)
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Nd/Nd (1)
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paleomagnetism (8)
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Pb/Pb (2)
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radiation damage (1)
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Rb/Sr (9)
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Re/Os (3)
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Sm/Nd (9)
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Th/U (3)
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thermochronology (3)
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U/Pb (77)
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U/Th/Pb (5)
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uranium disequilibrium (1)
-
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geologic age
-
Cenozoic
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Quaternary
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Pleistocene
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lower Pleistocene (1)
-
-
upper Quaternary (2)
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Tertiary
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Challis Volcanics (1)
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Neogene
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Miocene
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lower Miocene (1)
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Paintbrush Tuff (1)
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Topopah Spring Member (2)
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upper Miocene
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Messinian (1)
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-
-
Pliocene (5)
-
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Paleogene
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Eocene
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middle Eocene (1)
-
upper Eocene (2)
-
-
Oligocene
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Fish Canyon Tuff (1)
-
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Paleocene (6)
-
-
-
upper Cenozoic (1)
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Aptian (1)
-
-
Middle Cretaceous (6)
-
Upper Cretaceous
-
Campanian (1)
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Kodiak Formation (1)
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Tuolumne Intrusive Suite (4)
-
-
-
Jurassic
-
Lower Jurassic
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Laberge Group (1)
-
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Middle Jurassic (2)
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Upper Jurassic
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Portlandian (1)
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Tithonian (2)
-
-
-
lower Mesozoic (1)
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Triassic
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Lower Triassic (2)
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Middle Triassic (1)
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Mole Granite (3)
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Upper Triassic (3)
-
-
Vaca Muerta Formation (1)
-
-
Moldanubian (3)
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Paleozoic
-
Cambrian
-
Lower Cambrian
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Terreneuvian (1)
-
-
Upper Cambrian
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Galesville Sandstone (1)
-
-
-
Carboniferous
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Lower Carboniferous (1)
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Mississippian
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Lower Mississippian
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Tournaisian (1)
-
-
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Pennsylvanian
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Middle Pennsylvanian (1)
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Upper Pennsylvanian (1)
-
-
Upper Carboniferous (2)
-
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Devonian
-
Heemskirk Granite (3)
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Lower Devonian (1)
-
Middle Devonian
-
Nahanni Formation (1)
-
-
Upper Devonian (5)
-
-
Helderberg Group (1)
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Keyser Limestone (1)
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lower Paleozoic (3)
-
middle Paleozoic (1)
-
Ordovician
-
Lower Ordovician (2)
-
Meguma Group (1)
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Upper Ordovician (1)
-
-
Permian
-
Lower Permian (2)
-
-
Silurian
-
Lower Silurian
-
Wenlock (1)
-
-
Middle Silurian
-
McKenzie Formation (1)
-
-
Upper Silurian
-
Cayugan
-
Tonoloway Limestone (1)
-
-
-
-
upper Paleozoic (2)
-
-
Phanerozoic (2)
-
Precambrian
-
Archean
-
Blake River Group (1)
-
Neoarchean (5)
-
Paleoarchean (1)
-
Warrawoona Group (1)
-
-
Delhi Supergroup (2)
-
Levack Gneiss (1)
-
North Shore Volcanics (2)
-
Prichard Formation (1)
-
Purcell System (1)
-
Transvaal Supergroup (1)
-
upper Precambrian
-
Proterozoic
-
Coldbrook Group (1)
-
Damara System (2)
-
Mesoproterozoic
-
Belt Supergroup (2)
-
Gawler Range Volcanics (2)
-
Hiltaba Suite (1)
-
Shuangqiaoshan Group (1)
-
-
Neoproterozoic
-
Burra Group (1)
-
Cryogenian (1)
-
Dengying Formation (1)
-
Doushantuo Formation (1)
-
Ediacaran (3)
-
-
Paleoproterozoic
-
Birimian (1)
-
Qinling Group (1)
-
Rooiberg Group (2)
-
-
Sinian
-
Dengying Formation (1)
-
Doushantuo Formation (1)
-
-
Tapley Hill Formation (1)
-
-
-
Waterberg System (1)
-
-
-
igneous rocks
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igneous rocks
-
carbonatites (5)
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feldspathoid rocks (4)
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granophyre (9)
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hypabyssal rocks (3)
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plutonic rocks
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anorthosite (6)
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diabase (3)
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diorites
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diorite porphyry (1)
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quartz diorites (7)
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tonalite (10)
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trondhjemite (2)
-
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essexite (1)
-
gabbros
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alkali gabbros
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teschenite (1)
-
-
norite (1)
-
-
granites
-
alkali granites (5)
-
aplite (15)
-
A-type granites (26)
-
biotite granite (2)
-
charnockite (2)
-
granite porphyry (4)
-
granosyenite (1)
-
graphic granite (1)
-
I-type granites (9)
-
leucogranite (19)
-
microgranite (5)
-
monzogranite (10)
-
rapakivi (5)
-
S-type granites (11)
-
-
granodiorites (22)
-
ijolite (1)
-
lamprophyres
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camptonite (1)
-
minette (1)
-
spessartite (1)
-
-
monzodiorite (5)
-
monzonites (2)
-
pegmatite (204)
-
quartz monzonite (7)
-
syenites
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albitite (3)
-
alkali syenites (3)
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granosyenite (1)
-
nepheline syenite (4)
-
quartz syenite (2)
-
-
ultramafics
-
peridotites
-
lherzolite (2)
-
-
-
-
porphyry
-
vitrophyre (1)
-
-
volcanic rocks
-
andesites (8)
-
basalts
-
alkali basalts
-
trachybasalts (1)
-
-
mid-ocean ridge basalts (6)
-
ocean-island basalts (2)
-
-
dacites (4)
-
glasses
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obsidian (1)
-
volcanic glass (1)
-
-
komatiite (1)
-
latite (1)
-
phonolites (6)
-
pyroclastics
-
ash-flow tuff (2)
-
ignimbrite (6)
-
pumice (1)
-
tuff (7)
-
-
rhyolites
-
quartz porphyry (2)
-
-
trachyandesites (4)
-
trachytes (3)
-
vitrophyre (1)
-
-
-
ophiolite (4)
-
-
metamorphic rocks
-
K-bentonite (1)
-
metamorphic rocks
-
amphibolites (2)
-
fulgurite (1)
-
gneisses
-
granite gneiss (2)
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orthogneiss (3)
-
paragneiss (3)
-
-
hornfels (1)
-
marbles (3)
-
metacarbonate rocks (1)
-
metaigneous rocks
-
metadiabase (1)
-
metagranite (2)
-
serpentinite (3)
-
-
metaplutonic rocks (1)
-
metasedimentary rocks
-
metachert (1)
-
metaconglomerate (1)
-
metapelite (4)
-
paragneiss (3)
-
-
metasomatic rocks
-
fenite (1)
-
greisen (11)
-
rodingite (1)
-
serpentinite (3)
-
skarn (13)
-
-
metavolcanic rocks (6)
-
migmatites
-
anatexite (3)
-
-
mylonites
-
blastomylonite (1)
-
-
phyllites (1)
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phyllonites (1)
-
quartzites (1)
-
schists
-
blueschist (1)
-
-
-
ophiolite (4)
-
turbidite (2)
-
-
meteorites
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meteorites (1)
-
-
minerals
-
alloys
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electrum (1)
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silicides (1)
-
-
arsenates
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pharmacosiderite (1)
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scorodite (1)
-
-
arsenides
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arsenopyrite (2)
-
-
borates (8)
-
carbonates
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bastnaesite (9)
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calcite (7)
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cancrinite (4)
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dawsonite (2)
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dolomite (1)
-
nahcolite (2)
-
parisite (1)
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rhodochrosite (2)
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strontianite (1)
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synchysite (1)
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thaumasite (1)
-
-
chromates (1)
-
halides
-
chlorides
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eudialyte (4)
-
halite (1)
-
-
fluorides
-
bastnaesite (9)
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cryolite (1)
-
fluorite (7)
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neighborite (1)
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parisite (1)
-
synchysite (1)
-
topaz (16)
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triplite (1)
-
zinnwaldite (4)
-
-
fluosilicates (1)
-
-
iron minerals (2)
-
K-bentonite (1)
-
minerals (9)
-
molybdates
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wulfenite (1)
-
-
native elements
-
graphite (1)
-
-
oxalates
-
whewellite (1)
-
-
oxides
-
akaganeite (1)
-
alexandrite (1)
-
anatase (2)
-
bixbyite (2)
-
boehmite (1)
-
brookite (1)
-
cassiterite (18)
-
chrysoberyl (3)
-
gahnite (1)
-
gibbsite (1)
-
goethite (3)
-
hematite (4)
-
hydroxides
-
aluminum hydroxides (1)
-
oxyhydroxides (1)
-
-
ilmenite (7)
-
iron oxides (8)
-
jacobsite (1)
-
magnetite (9)
-
niobates
-
aeschynite (4)
-
betafite (1)
-
columbite (28)
-
euxenite (6)
-
fergusonite (1)
-
ixiolite (1)
-
loparite (1)
-
pyrochlore (11)
-
samarskite (2)
-
tapiolite (2)
-
-
nordstrandite (1)
-
perovskite (1)
-
pitchblende (1)
-
pseudobrookite (3)
-
pyrophanite (2)
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rutile (8)
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sapphire (1)
-
spinel (3)
-
tantalates
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betafite (1)
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euxenite (6)
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ixiolite (1)
-
microlite (5)
-
tantalite (16)
-
wodginite (3)
-
-
titanium oxides (3)
-
uraninite (2)
-
zirconolite (4)
-
-
phosphates
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amblygonite (6)
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apatite (16)
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autunite (1)
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britholite (3)
-
eosphorite (2)
-
fluorapatite (7)
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graftonite (1)
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herderite (2)
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hinsdalite (1)
-
lithiophilite (2)
-
monazite (19)
-
montebrasite (7)
-
rhabdophane (2)
-
triphylite (1)
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triplite (1)
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turquoise (1)
-
vivianite (1)
-
xenotime (9)
-
-
selenides (2)
-
silicates
-
aluminosilicates (2)
-
borosilicates (11)
-
chain silicates
-
amphibole group
-
alkalic amphibole (1)
-
clinoamphibole
-
actinolite (2)
-
arfvedsonite (5)
-
glaucophane (1)
-
grunerite (1)
-
hornblende (11)
-
kaersutite (2)
-
pargasite (3)
-
richterite (1)
-
riebeckite (3)
-
tremolite (1)
-
tschermakite (1)
-
-
orthoamphibole
-
anthophyllite (1)
-
-
-
astrophyllite (1)
-
bavenite (4)
-
carpholite (3)
-
prehnite (1)
-
pyroxene group
-
clinopyroxene
-
aegirine (6)
-
augite (3)
-
diopside (1)
-
spodumene (24)
-
-
orthopyroxene (2)
-
-
rhodonite group
-
babingtonite (3)
-
-
wollastonite group
-
wollastonite (1)
-
-
-
feldspathoids (2)
-
framework silicates
-
cancrinite (4)
-
danburite (1)
-
feldspar group
-
alkali feldspar
-
adularia (3)
-
amazonite (6)
-
K-feldspar (17)
-
microcline (11)
-
orthoclase (4)
-
perthite (6)
-
sanidine (4)
-
-
plagioclase
-
albite (15)
-
anorthite (1)
-
-
-
leucite (1)
-
nepheline group
-
nepheline (1)
-
-
silica minerals
-
amethyst (2)
-
cristobalite (1)
-
moganite (1)
-
quartz
-
smoky quartz (2)
-
-
tridymite (1)
-
-
sodalite group
-
genthelvite (4)
-
helvite (9)
-
sodalite (1)
-
tugtupite (1)
-
-
zeolite group
-
analcime (2)
-
chabazite (4)
-
edingtonite (1)
-
garronite (1)
-
gmelinite (2)
-
harmotome (1)
-
laumontite (2)
-
natrolite (2)
-
phillipsite (2)
-
pollucite (10)
-
-
-
orthosilicates
-
nesosilicates
-
andalusite (2)
-
braunite (1)
-
britholite group
-
britholite (3)
-
-
datolite group
-
datolite (3)
-
gadolinite (7)
-
-
dumortierite (3)
-
euclase (1)
-
garnet group
-
almandine (3)
-
andradite (2)
-
grossular (1)
-
spessartine (4)
-
vanadium garnet (1)
-
-
grandidierite (1)
-
mullite (2)
-
olivine group
-
olivine (2)
-
peridot (1)
-
-
phenakite group
-
eucryptite (1)
-
phenakite (7)
-
-
sillimanite (1)
-
stillwellite (1)
-
thaumasite (1)
-
titanite group
-
titanite (11)
-
-
topaz (16)
-
zircon group
-
thorite (2)
-
zircon (68)
-
-
-
sorosilicates
-
axinite group (4)
-
bertrandite (9)
-
chevkinite group
-
chevkinite (3)
-
perrierite (4)
-
-
epidote group
-
allanite (4)
-
epidote (6)
-
-
melilite group
-
melilite (1)
-
-
prismatine (1)
-
pumpellyite group
-
pumpellyite (1)
-
-
thalenite (1)
-
thortveitite group
-
thortveitite (3)
-
-
-
-
ring silicates
-
aquamarine (7)
-
beryl (37)
-
cordierite (3)
-
emerald (6)
-
eudialyte (4)
-
labuntsovite (3)
-
milarite group
-
milarite (1)
-
-
tourmaline group
-
dravite (10)
-
elbaite (26)
-
foitite (6)
-
schorl (18)
-
uvite (4)
-
-
-
sheet silicates
-
chlorite group
-
chamosite (1)
-
chlorite (4)
-
clinochlore (1)
-
cookeite (2)
-
-
clay minerals
-
dickite (1)
-
kaolinite (2)
-
montmorillonite (2)
-
nontronite (3)
-
saponite (2)
-
smectite (4)
-
-
illite (3)
-
mica group
-
annite (3)
-
biotite (22)
-
celadonite (2)
-
glauconite (2)
-
lepidolite (18)
-
muscovite (25)
-
polylithionite (7)
-
zinnwaldite (4)
-
-
palygorskite (2)
-
petalite (4)
-
sericite (3)
-
serpentine group
-
berthierine (1)
-
lizardite (1)
-
serpentine (1)
-
-
-
-
sulfates
-
alum (1)
-
alunite (1)
-
anhydrite (1)
-
barite (4)
-
ettringite (2)
-
gypsum (3)
-
hinsdalite (1)
-
jarosite (1)
-
kieserite (1)
-
thaumasite (1)
-
-
sulfides
-
arsenopyrite (2)
-
bismuthinite (1)
-
chalcopyrite (3)
-
copper sulfides (1)
-
galena (3)
-
genthelvite (4)
-
greigite (1)
-
helvite (9)
-
molybdenite (9)
-
pyrite (7)
-
sphalerite (1)
-
stibnite (1)
-
-
sulfosalts
-
sulfarsenates
-
enargite (1)
-
-
sulfarsenites
-
tennantite (1)
-
-
-
tellurides (2)
-
tungstates
-
scheelite (2)
-
wolframite (2)
-
-
uranium minerals (2)
-
vanadates (1)
-
-
Primary terms
-
absolute age (103)
-
Africa
-
Central Africa
-
Congo Democratic Republic (1)
-
Rwanda (1)
-
-
East Africa
-
Malawi (3)
-
Mozambique (4)
-
Zambia (2)
-
-
Limpopo Belt (1)
-
Madagascar
-
Antananarivo Madagascar (3)
-
-
North Africa
-
Egypt
-
Eastern Desert (3)
-
-
Morocco (1)
-
-
Nubian Shield (3)
-
Southern Africa
-
Kaapvaal Craton (2)
-
Namibia (12)
-
South Africa
-
Bushveld Complex (9)
-
Eastern Cape Province South Africa
-
Cape Town South Africa (1)
-
-
Merensky Reef (1)
-
Transvaal region (3)
-
Western Cape Province South Africa (2)
-
-
Zimbabwe (2)
-
-
West Africa
-
Adamawa (1)
-
Burkina Faso (1)
-
Cameroon (1)
-
Nigeria (4)
-
-
-
Antarctica
-
Antarctic Peninsula (1)
-
East Antarctica (1)
-
Larsemann Hills (1)
-
Queen Maud Land (1)
-
Transantarctic Mountains (1)
-
Victoria Land (1)
-
-
Arctic Ocean
-
Amerasia Basin (1)
-
-
Arctic region
-
Greenland
-
Ilimaussaq (1)
-
-
-
Asia
-
Altai Mountains
-
Mongolian Altai (1)
-
-
Arabian Peninsula
-
Arabian Shield (3)
-
Saudi Arabia (1)
-
Yemen (1)
-
-
Buryat Russian Federation (1)
-
Central Asia
-
Kazakhstan (1)
-
Pamirs (7)
-
-
Chukotka Russian Federation (1)
-
Far East
-
Burma
-
Shan State Burma (1)
-
-
China
-
Anhui China (1)
-
Da Hinggan Ling (1)
-
Dabie Mountains (2)
-
Fujian China (3)
-
Guangxi China (1)
-
Heilongjiang China
-
Xiao Hinggan Ling (1)
-
-
Henan China (1)
-
Hubei China (2)
-
Inner Mongolia China
-
Bayan Obo China (1)
-
-
Jiangxi China (3)
-
Jilin China (2)
-
Kunlun Mountains (2)
-
North China Platform (3)
-
Qaidam Basin (1)
-
Qinling Mountains (1)
-
Sanjiang (1)
-
Shandong China
-
Shandong Peninsula (1)
-
-
Sichuan China (1)
-
Sulu Terrane (2)
-
Xinjiang China (1)
-
Xizang China
-
Gangdese Belt (1)
-
-
Yangtze Platform (2)
-
Yangtze River valley (2)
-
Yunnan China (4)
-
-
Indonesia (1)
-
Japan
-
Honshu
-
Abukuma Mountains (1)
-
Japanese Alps
-
Hida Mountains (1)
-
-
-
Kyushu
-
Fukuoka Japan (1)
-
-
-
Korea
-
South Korea
-
Kyongsang Basin (1)
-
-
-
Malaysia (2)
-
Mongolia
-
Mongolian Altai (1)
-
-
Philippine Islands
-
Luzon (1)
-
Mindanao (1)
-
-
Thailand (1)
-
-
Gobi Desert (1)
-
Himalayas
-
Nanga Parbat (2)
-
-
Hindu Kush (1)
-
Indian Peninsula
-
Afghanistan (3)
-
India
-
Bastar Craton (2)
-
Chhattisgarh India
-
Bastar India (1)
-
-
Madhya Pradesh India (1)
-
Rajasthan India
-
Aravalli Range (1)
-
Khetri copper belt (1)
-
-
Tamil Nadu India (1)
-
-
Jammu and Kashmir
-
Kashmir (1)
-
Nanga Parbat (2)
-
-
Nepal (1)
-
Pakistan (8)
-
-
Irkutsk Russian Federation (1)
-
Kamchatka Russian Federation
-
Kamchatka Peninsula
-
Tolbachik (1)
-
-
-
Karakoram (1)
-
Krasnoyarsk Russian Federation
-
Taymyr Dolgan-Nenets Russian Federation
-
Norilsk region (1)
-
-
-
Kyrgyzstan (1)
-
Middle East
-
Iran
-
Elburz (1)
-
Sanandaj-Sirjan Zone (1)
-
-
Israel
-
Elath Israel (1)
-
Timna (1)
-
-
Turkey (1)
-
-
Murgab Basin (1)
-
Primorye Russian Federation (1)
-
Russian Pacific region (1)
-
Sikhote-Alin Range (1)
-
Southeast Asia (1)
-
Tajikistan
-
Badakhshan (2)
-
-
Tibetan Plateau (1)
-
Tien Shan (2)
-
Transbaikalia (8)
-
Tunguska Basin (1)
-
Uzbekistan
-
Almalyk Uzbekistan (1)
-
-
Western Transbaikalia (1)
-
Yakutia Russian Federation (2)
-
Zabaykalskiy Russian Federation (2)
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge (1)
-
North Atlantic
-
Caribbean Sea (1)
-
Gulf of Cadiz (1)
-
-
South Atlantic (1)
-
-
Atlantic Ocean Islands
-
Azores
-
Sao Miguel Island
-
Agua de Pau (1)
-
-
-
-
Australasia
-
Australia
-
Adelaide Geosyncline (1)
-
Lachlan fold belt (6)
-
New South Wales Australia
-
Northparkes Mine (3)
-
Parkes Australia (1)
-
-
Queensland Australia (1)
-
South Australia
-
Gawler Craton (4)
-
Olympic Dam Deposit (3)
-
-
Tasmania Australia (4)
-
Victoria Australia
-
Stawell Australia (1)
-
-
Western Australia
-
Darling Range (1)
-
North Pole Deposit (1)
-
Pilbara Craton (3)
-
Yilgarn Craton (2)
-
-
-
Papua (1)
-
Papua New Guinea
-
Lihir Island (1)
-
New Ireland (1)
-
Ok Tedi Mine (1)
-
-
Tasman orogenic zone (1)
-
-
bacteria (2)
-
barite deposits (1)
-
boron
-
B-11/B-10 (6)
-
-
brines (8)
-
Canada
-
Cassiar Mountains (1)
-
Eastern Canada
-
Baffin Island (2)
-
James Bay (1)
-
Maritime Provinces
-
New Brunswick
-
Gloucester County New Brunswick (1)
-
-
Nova Scotia
-
Antigonish County Nova Scotia (1)
-
Digby County Nova Scotia (1)
-
Yarmouth County Nova Scotia (1)
-
-
-
Meguma Terrane (1)
-
Newfoundland and Labrador
-
Labrador (1)
-
Newfoundland
-
Avalon Peninsula (1)
-
Burin Peninsula (1)
-
-
-
Ontario
-
Cochrane District Ontario
-
Abitibi Ontario (1)
-
-
Kenora District Ontario (1)
-
Sudbury igneous complex (3)
-
Sudbury Structure (2)
-
Thunder Bay District Ontario
-
Marshall Lake (1)
-
-
-
Quebec
-
Abitibi County Quebec
-
Chibougamau Quebec (1)
-
-
Monteregian Hills (3)
-
Montreal and Jesus Islands County Quebec
-
Montreal Quebec (1)
-
-
Rouville County Quebec
-
Mont-Saint-Hilaire Quebec (4)
-
-
-
-
Nunavut
-
Baffin Island (2)
-
-
Selwyn Mountains (1)
-
Stikinia Terrane (1)
-
Western Canada
-
British Columbia
-
Atlin British Columbia (1)
-
Endako British Columbia (1)
-
Revelstoke British Columbia (1)
-
-
Canadian Cordillera (2)
-
Manitoba
-
Bernic Lake (1)
-
Flin Flon Manitoba (1)
-
Snow Lake Manitoba (2)
-
Tanco Pegmatite (4)
-
-
Northwest Territories (6)
-
Saskatchewan (1)
-
Selwyn Basin (2)
-
Yukon Territory
-
Whitehorse Yukon Territory (1)
-
-
-
Whitehorse Trough (1)
-
-
carbon
-
C-13/C-12 (13)
-
-
Cenozoic
-
Quaternary
-
Pleistocene
-
lower Pleistocene (1)
-
-
upper Quaternary (2)
-
-
Tertiary
-
Challis Volcanics (1)
-
Neogene
-
Miocene
-
lower Miocene (1)
-
Paintbrush Tuff (1)
-
Topopah Spring Member (2)
-
upper Miocene
-
Messinian (1)
-
-
-
Pliocene (5)
-
-
Paleogene
-
Eocene
-
middle Eocene (1)
-
upper Eocene (2)
-
-
Oligocene
-
Fish Canyon Tuff (1)
-
-
Paleocene (6)
-
-
-
upper Cenozoic (1)
-
-
Central America
-
Guatemala (1)
-
-
ceramic materials (1)
-
chemical analysis (3)
-
clay mineralogy (5)
-
construction materials
-
dimension stone (1)
-
-
continental drift (3)
-
corundum deposits (1)
-
crust (41)
-
crystal chemistry (113)
-
crystal growth (28)
-
crystal structure (123)
-
crystallography (3)
-
data processing (7)
-
deformation (28)
-
diamond deposits (1)
-
earthquakes (1)
-
East Pacific Ocean Islands
-
Galapagos Islands
-
Fernandina (1)
-
-
-
economic geology (7)
-
education (2)
-
Europe
-
Alps
-
Central Alps
-
Lepontine Alps
-
Gotthard Massif (1)
-
-
-
Eastern Alps
-
Austroalpine Zone (1)
-
-
Swiss Alps
-
Central Swiss Alps (1)
-
-
Western Alps (1)
-
-
Bergell Massif (1)
-
Carpathians
-
Slovakian Carpathians
-
Low Tatra Mountains (1)
-
-
Western Carpathians (2)
-
-
Central Europe
-
Austria
-
Lower Austria (2)
-
-
Black Forest (1)
-
Bohemian Massif (3)
-
Czech Republic
-
Bohemia (1)
-
Moravia (3)
-
-
Erzgebirge (1)
-
Germany
-
Bavaria Germany
-
Munchberg Gneiss Massif (1)
-
-
Eifel (7)
-
Franconia (1)
-
Rhineland-Palatinate Germany
-
Laacher See (2)
-
-
Saxony Germany (1)
-
Vogtland (1)
-
-
Hungary
-
Balaton region (2)
-
Veszprem Hungary (1)
-
-
Magura Nappe (1)
-
Poland
-
Dolnoslaskie Poland
-
Strzegom-Sobotka Massif (2)
-
-
Jordanow Poland (1)
-
Lower Silesia (4)
-
Polish Sudeten Mountains (3)
-
Sowie Mountains (2)
-
-
Slovakia
-
Slovakian Carpathians
-
Low Tatra Mountains (1)
-
-
Veporides (1)
-
-
Sudeten Mountains
-
Polish Sudeten Mountains (3)
-
Sowie Mountains (2)
-
-
Switzerland
-
Gotthard Massif (1)
-
Graubunden Switzerland (1)
-
Swiss Alps
-
Central Swiss Alps (1)
-
-
Ticino Switzerland (1)
-
-
-
Murmansk Russian Federation
-
Khibiny Mountains (3)
-
Kola Peninsula (2)
-
Lovozero Massif (2)
-
-
Pyrenees
-
French Pyrenees (1)
-
-
Rhenish Schiefergebirge
-
Eifel (7)
-
-
Southern Europe
-
Bulgaria (1)
-
Greece
-
Euboea (1)
-
Greek Aegean Islands
-
Cyclades
-
Tinos (1)
-
-
-
Greek Macedonia
-
Chalkidiki (1)
-
-
Sterea Ellas
-
Laurion Greece (1)
-
-
-
Iberian Peninsula
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Central Iberian Zone (1)
-
Portugal (2)
-
Spain
-
Andalusia Spain
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Serrania de Ronda (1)
-
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Asturias Spain (1)
-
Betic Cordillera
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Serrania de Ronda (1)
-
-
Castilla y Leon Spain
-
Salamanca Spain (1)
-
-
Galicia Spain (1)
-
Madrid Spain (1)
-
-
-
Italy
-
Campania Italy
-
Monte Somma (1)
-
Phlegraean Fields (1)
-
Vesuvius (1)
-
-
Ivrea-Verbano Zone (1)
-
Latium Italy
-
Alban Hills (1)
-
Rome Italy (2)
-
Viterbo Italy (2)
-
-
Liguria Italy (1)
-
Lombardy Italy
-
Varese Italy (4)
-
-
Piemonte Italy (4)
-
Trentino-Alto Adige Italy
-
Trento Italy (1)
-
-
Tuscany Italy
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Livorno Italy (1)
-
Monte Capanne (3)
-
-
-
Macedonia
-
Greek Macedonia
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Chalkidiki (1)
-
-
-
Serbia (1)
-
Serbo-Macedonian Massif (1)
-
-
Tauern Window (1)
-
Ukraine
-
Volyn-Podolia (1)
-
Zhitomir Ukraine
-
Korosten Ukraine (1)
-
-
-
Variscides (2)
-
Western Europe
-
France
-
Central Massif (2)
-
Cotes-d'Armor France (1)
-
French Pyrenees (1)
-
Hautes-Pyrenees France (1)
-
Ille-et-Vilaine France (1)
-
Manche France (2)
-
Normandy (1)
-
-
Ireland
-
Leinster (1)
-
-
North Pyrenean Fault (1)
-
Scandinavia
-
Denmark
-
Bornholm (1)
-
-
Finland (2)
-
Norway
-
Nordland Norway (1)
-
Oslo Graben (1)
-
Oslo Norway (2)
-
Southern Norway (1)
-
Telemark Norway (2)
-
Troms Norway (1)
-
-
Sweden (3)
-
-
United Kingdom
-
Great Britain
-
England
-
Cornwall England (1)
-
-
Scotland
-
Argyllshire Scotland
-
Islay (1)
-
Mull Island (1)
-
-
Galloway Scotland (1)
-
Great Glen Fault (1)
-
Hebrides
-
Inner Hebrides
-
Islay (1)
-
Isle of Skye (2)
-
Mull Island (1)
-
Raasay (1)
-
-
-
Highland region Scotland
-
Inverness-shire Scotland
-
Isle of Skye (2)
-
Raasay (1)
-
-
Sutherland Scotland (1)
-
-
Moine thrust zone (2)
-
Orkney Islands (1)
-
Scottish Highlands (1)
-
-
-
-
-
-
faults (50)
-
fluorspar deposits (3)
-
folds (10)
-
foliation (12)
-
fractures (9)
-
gems (30)
-
geochemistry (98)
-
geochronology (6)
-
geology (1)
-
geomorphology (1)
-
geophysical methods (7)
-
geosynclines (1)
-
gravel deposits (1)
-
ground water (1)
-
heat flow (2)
-
hydrogen
-
D/H (13)
-
deuterium (4)
-
-
hydrology (1)
-
igneous rocks
-
carbonatites (5)
-
feldspathoid rocks (4)
-
granophyre (9)
-
hypabyssal rocks (3)
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norite (1)
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granites
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A-type granites (26)
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graphic granite (1)
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I-type granites (9)
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leucogranite (19)
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rapakivi (5)
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S-type granites (11)
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granodiorites (22)
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ijolite (1)
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lamprophyres
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minette (1)
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monzodiorite (5)
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syenites
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nepheline syenite (4)
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quartz syenite (2)
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ultramafics
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peridotites
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lherzolite (2)
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-
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porphyry
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vitrophyre (1)
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-
volcanic rocks
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andesites (8)
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basalts
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alkali basalts
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trachybasalts (1)
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mid-ocean ridge basalts (6)
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ocean-island basalts (2)
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dacites (4)
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glasses
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obsidian (1)
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volcanic glass (1)
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komatiite (1)
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latite (1)
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phonolites (6)
-
pyroclastics
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ash-flow tuff (2)
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ignimbrite (6)
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pumice (1)
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tuff (7)
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rhyolites
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quartz porphyry (2)
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trachyandesites (4)
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trachytes (3)
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vitrophyre (1)
-
-
-
inclusions
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fluid inclusions (71)
-
-
Indian Ocean
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Mid-Indian Ridge
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Southeast Indian Ridge (1)
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Red Sea (1)
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Indian Ocean Islands
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Madagascar
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Antananarivo Madagascar (3)
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-
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industrial minerals (1)
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intrusions (218)
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isostasy (1)
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isotopes
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radioactive isotopes
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Cs-137 (1)
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Pb-207/Pb-204 (6)
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Pb-208/Pb-204 (3)
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Ra-226 (1)
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Rb-87/Sr-86 (3)
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Sm-147/Nd-144 (4)
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Th-230 (1)
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U-238 (1)
-
-
stable isotopes
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Al-27 (2)
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B-11/B-10 (6)
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C-13/C-12 (13)
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D/H (13)
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deuterium (4)
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Hf-177/Hf-176 (4)
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Li-7/Li-6 (3)
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N-15/N-14 (1)
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Nd-144/Nd-143 (23)
-
O-18/O-16 (38)
-
Pb-206/Pb-204 (8)
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Pb-207/Pb-204 (6)
-
Pb-207/Pb-206 (2)
-
Pb-208/Pb-204 (3)
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Rb-87/Sr-86 (3)
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S-34/S-32 (10)
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Sm-147/Nd-144 (4)
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Sr-87/Sr-86 (32)
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-
-
lava (4)
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lineation (2)
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magmas (134)
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mantle (20)
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maps (1)
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marble deposits (1)
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Mediterranean region
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Aegean Islands
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Greek Aegean Islands
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Cyclades
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Tinos (1)
-
-
-
-
-
Mediterranean Sea
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East Mediterranean
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Aegean Sea (1)
-
-
-
Mesozoic
-
Cretaceous
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Lower Cretaceous
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Aptian (1)
-
-
Middle Cretaceous (6)
-
Upper Cretaceous
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Campanian (1)
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Kodiak Formation (1)
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Tuolumne Intrusive Suite (4)
-
-
-
Jurassic
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Lower Jurassic
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Laberge Group (1)
-
-
Middle Jurassic (2)
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Upper Jurassic
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Portlandian (1)
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Tithonian (2)
-
-
-
lower Mesozoic (1)
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Triassic
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Lower Triassic (2)
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Middle Triassic (1)
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Mole Granite (3)
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Upper Triassic (3)
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-
Vaca Muerta Formation (1)
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-
metal ores
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antimony ores (2)
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arsenic ores (1)
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base metals (6)
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beryllium ores (7)
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IOCG deposits (3)
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lead-zinc deposits (4)
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lithium ores (16)
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nickel ores (4)
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niobium ores (11)
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platinum ores (7)
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polymetallic ores (15)
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rare earth deposits
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cerium ores (3)
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silver ores (14)
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strontium ores (1)
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tellurium ores (2)
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thorium ores (2)
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tin ores (28)
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uranium ores (10)
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zinc ores (14)
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zirconium ores (3)
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-
metals
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actinides
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thorium
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Th-230 (1)
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-
uranium
-
U-238 (1)
-
-
-
alkali metals
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cesium
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Cs-137 (1)
-
-
lithium
-
Li-7/Li-6 (3)
-
-
potassium (6)
-
rubidium
-
Rb-87/Sr-86 (3)
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sodium (10)
-
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alkaline earth metals
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barium (2)
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beryllium (28)
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calcium (7)
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magnesium (2)
-
radium
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Ra-226 (1)
-
-
strontium
-
Rb-87/Sr-86 (3)
-
Sr-87/Sr-86 (32)
-
-
-
aluminum
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Al-27 (2)
-
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antimony (1)
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arsenic (1)
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cadmium (1)
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chromium (2)
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copper (3)
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gold (6)
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hafnium
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Hf-177/Hf-176 (4)
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-
iron
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ferric iron (7)
-
ferrous iron (5)
-
-
lead
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Pb-206/Pb-204 (8)
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Pb-207/Pb-204 (6)
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Pb-207/Pb-206 (2)
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Pb-208/Pb-204 (3)
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-
manganese (15)
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molybdenum (1)
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niobium (23)
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platinum group
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platinum ores (7)
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precious metals (5)
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rare earths
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cerium (8)
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dysprosium (1)
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europium (2)
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gadolinium (1)
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lanthanum (4)
-
neodymium
-
Nd-144/Nd-143 (23)
-
Sm-147/Nd-144 (4)
-
-
samarium
-
Sm-147/Nd-144 (4)
-
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scandium (10)
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terbium (1)
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ytterbium (1)
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yttrium (25)
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tantalum (19)
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tin (9)
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metamorphic rocks
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amphibolites (2)
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fulgurite (1)
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gneisses
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orthogneiss (3)
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hornfels (1)
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marbles (3)
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metacarbonate rocks (1)
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metaigneous rocks
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metadiabase (1)
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metagranite (2)
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serpentinite (3)
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metaplutonic rocks (1)
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metasedimentary rocks
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metachert (1)
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metapelite (4)
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metasomatic rocks
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fenite (1)
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greisen (11)
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rodingite (1)
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skarn (13)
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metavolcanic rocks (6)
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migmatites
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mylonites
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phyllites (1)
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phyllonites (1)
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schists
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blueschist (1)
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metamorphism (25)
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metasomatism (103)
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meteorites (1)
-
Mexico
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mineral deposits, genesis (122)
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mineral exploration (46)
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mineralogy (5)
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minerals (9)
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Mohorovicic discontinuity (1)
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nitrogen
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N-15/N-14 (1)
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organic nitrogen (1)
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nodules (2)
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nonmetal deposits (4)
-
North America
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Appalachians
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Northern Appalachians (4)
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Valley and Ridge Province (1)
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-
Basin and Range Province
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Great Basin (1)
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Canadian Shield
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Grenville Province (6)
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Superior Province
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Abitibi Belt (5)
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English River Belt (2)
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Swayze greenstone belt (2)
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Uchi Subprovince (1)
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Wabigoon Belt (1)
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-
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Coast plutonic complex (2)
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Intermontane Belt (2)
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Keweenawan Rift (3)
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North American Cordillera
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Canadian Cordillera (2)
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North American Craton (1)
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Peninsular Ranges Batholith (2)
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Purcell Mountains (1)
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Rio Grande Rift (1)
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Rocky Mountains
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Northern Rocky Mountains (2)
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Southern Rocky Mountains (1)
-
U. S. Rocky Mountains
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Bitterroot Range (4)
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Flint Creek Range (1)
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San Juan Mountains (1)
-
-
-
Shuswap Complex (1)
-
Yukon-Tanana Terrane (2)
-
-
Ocean Drilling Program
-
Leg 165
-
ODP Site 1001 (1)
-
-
Leg 193
-
ODP Site 1188 (1)
-
-
-
ocean floors (3)
-
Oceania
-
Melanesia
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Fiji
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Viti Levu
-
Tavua Fiji (1)
-
-
-
-
-
orogeny (19)
-
oxygen
-
O-18/O-16 (38)
-
-
Pacific Ocean
-
East Pacific
-
Northeast Pacific
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Gulf of California
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Guaymas Basin (1)
-
-
Juan de Fuca Ridge (1)
-
-
Southeast Pacific
-
Chile Ridge (1)
-
-
-
North Pacific
-
Northeast Pacific
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Gulf of California
-
Guaymas Basin (1)
-
-
Juan de Fuca Ridge (1)
-
-
-
South Pacific
-
Southeast Pacific
-
Chile Ridge (1)
-
-
Southwest Pacific
-
Bismarck Sea
-
Manus Basin
-
PACMANUS hydrothermal field (1)
-
-
-
-
-
West Pacific
-
Southwest Pacific
-
Bismarck Sea
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Manus Basin
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PACMANUS hydrothermal field (1)
-
-
-
-
-
-
paleoclimatology (1)
-
paleogeography (4)
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paleomagnetism (8)
-
Paleozoic
-
Cambrian
-
Lower Cambrian
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Terreneuvian (1)
-
-
Upper Cambrian
-
Galesville Sandstone (1)
-
-
-
Carboniferous
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Lower Carboniferous (1)
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Mississippian
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Lower Mississippian
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Tournaisian (1)
-
-
-
Pennsylvanian
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Middle Pennsylvanian (1)
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Upper Pennsylvanian (1)
-
-
Upper Carboniferous (2)
-
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Devonian
-
Heemskirk Granite (3)
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Lower Devonian (1)
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Middle Devonian
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Nahanni Formation (1)
-
-
Upper Devonian (5)
-
-
Helderberg Group (1)
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Keyser Limestone (1)
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lower Paleozoic (3)
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middle Paleozoic (1)
-
Ordovician
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Lower Ordovician (2)
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Meguma Group (1)
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Upper Ordovician (1)
-
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Permian
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Lower Permian (2)
-
-
Silurian
-
Lower Silurian
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Wenlock (1)
-
-
Middle Silurian
-
McKenzie Formation (1)
-
-
Upper Silurian
-
Cayugan
-
Tonoloway Limestone (1)
-
-
-
-
upper Paleozoic (2)
-
-
paragenesis (55)
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petroleum
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natural gas (1)
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petrology (13)
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Phanerozoic (2)
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phase equilibria (18)
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phosphate deposits (1)
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phosphorus (6)
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placers (5)
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plate tectonics (37)
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Precambrian
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Archean
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Blake River Group (1)
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Neoarchean (5)
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Paleoarchean (1)
-
Warrawoona Group (1)
-
-
Delhi Supergroup (2)
-
Levack Gneiss (1)
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North Shore Volcanics (2)
-
Prichard Formation (1)
-
Purcell System (1)
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Transvaal Supergroup (1)
-
upper Precambrian
-
Proterozoic
-
Coldbrook Group (1)
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Damara System (2)
-
Mesoproterozoic
-
Belt Supergroup (2)
-
Gawler Range Volcanics (2)
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Hiltaba Suite (1)
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Shuangqiaoshan Group (1)
-
-
Neoproterozoic
-
Burra Group (1)
-
Cryogenian (1)
-
Dengying Formation (1)
-
Doushantuo Formation (1)
-
Ediacaran (3)
-
-
Paleoproterozoic
-
Birimian (1)
-
Qinling Group (1)
-
Rooiberg Group (2)
-
-
Sinian
-
Dengying Formation (1)
-
Doushantuo Formation (1)
-
-
Tapley Hill Formation (1)
-
-
-
Waterberg System (1)
-
-
quartz crystal (2)
-
remote sensing (4)
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sea water (4)
-
sea-floor spreading (1)
-
sedimentary rocks
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bauxite (1)
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carbonate rocks
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grainstone (1)
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limestone (2)
-
-
chemically precipitated rocks
-
evaporites
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salt (3)
-
-
-
clastic rocks
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arenite
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quartz arenite (1)
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conglomerate (1)
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sandstone (5)
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coal (1)
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oil sands (1)
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sedimentary structures
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biogenic structures
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algal structures
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stromatolites (1)
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bedding (1)
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rhythmic bedding (1)
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soft sediment deformation (1)
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sedimentation (1)
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sediments
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clastic sediments
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clay (1)
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kaolin (1)
-
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silicon (1)
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soils
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laterites (1)
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South America
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Andes
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Eastern Cordillera (1)
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Argentina
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Brazil
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Paraiba Brazil (2)
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Serra do Espinhaco (1)
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Chile
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Aisen del General Carlos Ibanez del Campo Chile
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Aisen Chile (1)
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Atacama Chile (1)
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Magallanes Chile (2)
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Colombia (1)
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Parana Basin (2)
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Patagonia
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Patagonian Andes (1)
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Patagonian Batholith (2)
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Peru (3)
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Precordillera (2)
-
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Southern Ocean
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Prydz Bay (1)
-
-
spectroscopy (5)
-
stratigraphy (2)
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structural analysis (8)
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structural geology (4)
-
sulfur
-
S-34/S-32 (10)
-
-
tectonics
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neotectonics (1)
-
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thermal analysis (2)
-
United States
-
Alaska
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Alaska Range (1)
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Kenai Quadrangle (1)
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Skagway Quadrangle (1)
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Arizona
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Mohave County Arizona (1)
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-
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California
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Central California (5)
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Colorado
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Montana
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Boulder Batholith (2)
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Granite County Montana (1)
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Nevada
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Lander County Nevada (1)
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Pershing County Nevada (1)
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New Jersey
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New Mexico
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Taos County New Mexico
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Questa Caldera (1)
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New York
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Adirondack Mountains (3)
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South Carolina
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Edgefield County South Carolina (1)
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McCormick County South Carolina (1)
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South Dakota (1)
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South Platte River valley (2)
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Southwestern U.S. (1)
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Texas
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Llano County Texas (1)
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Llano Uplift (1)
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Mason County Texas (1)
-
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U. S. Rocky Mountains
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Bitterroot Range (4)
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Utah
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Bingham mining district (1)
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Juab County Utah (1)
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Thomas Range (1)
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Virginia
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-
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Washington
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Golden Horn Batholith (6)
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Mount Rainier National Park (1)
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Okanogan County Washington (5)
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Whatcom County Washington (1)
-
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Western U.S. (1)
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
miarolitic cavities
Submicrometer yttrian zircon coating and arborescent aeschynite microcrystals on truncated bipyramidal anatase: An electron microscopy study of miarolitic cavities in the Cuasso al Monte granophyre (Varese, Italy) Available to Purchase
MINERALOGY AND PROVENANCE OF CLAYS IN MIAROLITIC CAVITIES OF THE PIKES PEAK BATHOLITH, COLORADO Available to Purchase
Crystal growth mechanisms in miarolitic cavities in the Lake George ring complex and vicinity, Colorado Available to Purchase
Examples of miarolitic cavities. Top row, left to right: miarolitic cavity ... Available to Purchase
(a) Interconnected miarolitic cavities (pinch-and-swell like structure) alo... Available to Purchase
ANALYSES OF HYPOGENE CLAY THAT FORMS THE MATRIX OF THE MIAROLITIC CAVITIES Open Access
Genthelvite Overgrowths On Danalite Cores from a Pegmatite Miarolitic Cavity in Cheyenne Canyon, El Paso County, Colorado Available to Purchase
Pegmatite minerals from miarolitic cavities of the Bodengo area. (a) Smoky ... Available to Purchase
Outcrop photograph showing numerous secondary miarolitic cavities, where fl... Available to Purchase
INVENTORY OF SELECTED CLAY SAMPLES MIAROLITIC CAVITIES, PIKES PEAK BATHOLIT... Available to Purchase
Mineralogy and Geochemistry of the Erongo Sub-Volcanic Granite-Miarolitic-Pegmatite Complex, Erongo, Namibia Available to Purchase
Petrographic and geochemical evolution of pervasively altered Bushveld granites at the Zaaiplaats tin mine Available to Purchase
Chemical and paragenetic data on gadolinite-group minerals from Baveno and Cuasso al Monte, southern Alps, Italy Available to Purchase
Micas from the Pikes Peak Batholith and its cogenetic granitic pegmatites, Colorado; optical properties, composition, and correlation with pegmatite evolution Available to Purchase
Li and F-bearing alkali amphibole from granitic pegmatite at Hurricane Mountain, Carroll County, New Hampshire Available to Purchase
Internal Evolution of Miarolitic Granitic Pegmatites at the Little Three Mine, Ramona, California, USA Available to Purchase
Comparison of fluid inclusion compositions analyzed from miarolitic cavitie... Available to Purchase
Extreme chemical heterogeneity of granite-derived hydrothermal fluids: An example from inclusions in a single crystal of miarolitic quartz Available to Purchase
Magmatic-Hydrothermal Evolution of the Barren Huangshan Pluton, Anhui Province, China: A Melt and Fluid Inclusion Study Available to Purchase
Genesis of the rhyolite-hosted tin occurrences in the Black Range, New Mexico, as indicated by stable isotope studies Available to Purchase
Tin mineralization in the Black Range is present in a series of Oligocene rhyolite domes that cover an area of approximately 200 km 2 in southwestern New Mexico. These rhyolites are typically high silica (76 to 78 percent), peraluminous, and topaz bearing. The δ 18 O values (~7.0 ‰) of unaltered rocks are typical of normal I-type granites. Locally along dome margins, the glassy groundmass of the rhyolite is pervasively altered to smectite, although sanidine phenocrysts are usually fresh, even in contact with tin-bearing veinlets. Tin occurs (1) rarely as cassiterite in miarolitic cavities near tin-bearing veinlets, (2) within altered zones in widely spaced cross-cutting veinlets of cassiterite ± wood tin (colloform cryptocrystalline cassiterite), and (3) most abundantly as widespread placer accumulations of wood tin ± cassiterite in drainages within or marginal to the domes. Veinlet minerals include early quartz, K-rich sanidine and topaz, followed by hematite, cassiterite ± wood tin, and cristobalite. Late chalcedony, fluorite, durangite, clays, zeolites, and a complex suite of unusual minerals are locally present in and near veinlets. The δ 18 O values of most individual minerals are remarkably uniform throughout the area (cassiterite, 4.3 to 3.2 ‰; wood tin, 3.0 to 1.2 ‰; hematite, 3.5 to 2.6 ‰). Within these narrow ranges the δ 18 O values for wood tin and hematite are distinctive in each of the three types of tin occurrences and they generally decrease paragenetically in individual veinlet and placer samples. The δ 18 O values of temporally overlapping cristobalite in veinlets, however, range from 9.7 to 11.8 ‰ and increase paragenetically. The δ 18 O values for quartz in miarolitic cavities containing cassiterite are nearly the same as those for adjacent rhyolite quartz phenocrysts (7.5 ‰). A consistent Δ 18 O of 1.0 ‰ for quartz-sanidine phenocrysts indicates isotope equilibration temperatures of ~700°C for rhyolite during dome emplacement. Temperatures based on quartz-hematite 18 O fractionations range from ~800°C (miarolitic cavities) to ~485°C (wood tin–bearing veinlets). Late cristobalite in the veinlets precipitated at a maximum temperature of only ~230°C. Cassiterite-hematite Δ 18 O values are uniform (0.7 ± 0.1 ‰), suggesting that the cassiterite-water curve is parallel to the hematite-water curve between 800° and 400°C. An empirical 18 O fractionation curve for cassiterite-water suggests that most wood tin precipitated above ~350°C. The δ 18 O and δD values of smectite from pervasive argillic alteration range from 10.9 to 15.1 ‰ and −73 to −107 ‰, respectively, and along with whole-rock data on altered rocks, imply alteration temperatures of ⩽235°C. The δ 18 O values for chalcedony range from 15.9 to 34.4 ‰ and imply temperatures generally ⩽160°C for local silicification of rhyolite. The δ 18 O H 2 O of the tin-bearing fluids was 8.0 ±0.5 ‰, indicating that the fluids equilibrated with a magma or high-temperature rhyolite throughout most of the time-space milieu of mineralization. However, limited data indicate that the δD H 2 O of the fluids ranged from −60 to at least as low as −101 ‰ and may have decreased with successive stages of mineralization, even though there is no evidence of mixing of the fluids with unexchanged meteoric water. Isotopically similar fluids may have been responsible for the pervasive alteration of the host rock. Integrated stable-isotope, fluid-inclusion, and petrographic and geologic data suggest that tin mineralization resulted from NaCl-saturated fluids that derived from shallow magmas or that equilibrated with high-temperature rhyolite. Tin mineralization resulted largely from rapid temperature decrease and decompression of vapor-rich fluids, which produced cassiterite in fractures at deeper levels and wood tin in the carapace of the domes. At shallow levels, HCl from the hydrolysis of NaCl permeated the wall rock adjacent to the widely spaced veinlets and contributed to the pervasive alteration of the glassy groundmass of the rhyolite. This model suggests that the tin resource potential of the area has already been realized with the mining of the placer wood tin.