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Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Cape Verde Islands (1)
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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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Kenya (1)
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Mozambique (3)
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Tanzania (3)
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Zambia (2)
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Madagascar (4)
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Mozambique Belt (1)
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North Africa
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Tunisia (1)
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Southern Africa
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Kaapvaal Craton (1)
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South Africa (1)
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Swaziland (1)
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West Africa
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Nigeria (2)
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Antarctica
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Enderby Land (1)
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Asia
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Altai Mountains (1)
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Central Asia
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Kazakhstan
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Lake Balkhash (1)
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Far East
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Burma
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Shan State Burma (1)
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China
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Inner Mongolia China
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Xinjiang China
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Japan (2)
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Jammu and Kashmir
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Middle East
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Siberia (1)
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Sri Lanka (2)
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Yakutia Russian Federation (1)
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Atlantic Ocean
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North Atlantic
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Atlantic Ocean Islands
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Australasia
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Australia
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Canada
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Eastern Canada
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Newfoundland and Labrador
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Ontario (3)
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Quebec
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Monteregian Hills (1)
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Rouville County Quebec
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Mont-Saint-Hilaire Quebec (2)
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Nunavut
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Baffin Island (1)
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Western Canada
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Alberta
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British Columbia (2)
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Manitoba
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Northwest Territories (3)
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Yukon Territory (1)
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Caribbean region
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West Indies
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Antilles
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Greater Antilles
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Cuba (1)
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Hispaniola
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Dominican Republic (1)
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Central America
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Guatemala (1)
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Commonwealth of Independent States
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Kazakhstan
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Lake Balkhash (1)
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Russian Federation
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Central Urals (2)
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Chelyabinsk Russian Federation
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Ilmen Mountains (1)
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Murmansk Russian Federation
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Khibiny Mountains (1)
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Lovozero Massif (1)
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Polar Urals (1)
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Sverdlovsk Russian Federation (1)
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Transbaikalia (1)
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Yakutia Russian Federation (1)
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Urals
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Central Urals (2)
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Polar Urals (1)
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Southern Urals
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Ilmen Mountains (1)
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Elba (8)
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Europe
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Alps
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Piedmont Alps
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Western Alps
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Cottian Alps
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Carpathians
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Central Europe
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Austria
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Czech Republic
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Moravia (1)
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Germany
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Poland
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Switzerland (1)
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Tatra Mountains (1)
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Murmansk Russian Federation
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Khibiny Mountains (1)
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Lovozero Massif (1)
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Pyrenees
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French Pyrenees (1)
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Southern Europe
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Greece
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Greek Aegean Islands
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Cyclades
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Syros (1)
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Italy
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Liguria Italy (1)
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Piemonte Italy
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Dora Maira Massif (1)
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Tuscany Italy
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Variscides (1)
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Western Europe
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Cottian Alps
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France
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Provence (1)
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Scandinavia
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Sweden
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Varmland Sweden (2)
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Indian Ocean Islands
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Madagascar (4)
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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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Syros (1)
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Mediterranean Sea
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East Mediterranean
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Ionian Sea
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Gulf of Corinth (1)
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West Mediterranean
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Ligurian Sea (1)
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Mexico (1)
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North America
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Appalachians (1)
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San Andreas Fault (1)
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South America
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Argentina
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Pampean Mountains (1)
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Brazil
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Minas Gerais Brazil (4)
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South Mountain Batholith (1)
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United States
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Alaska
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Nunivak Island (1)
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California
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Fresno County California (1)
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San Diego County California (2)
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Colorado
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Mesa County Colorado (1)
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Montrose County Colorado (1)
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Connecticut (1)
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Idaho (1)
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Minnesota
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Duluth Complex (1)
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Montana
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Park County Montana (1)
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Sweet Grass County Montana (1)
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New York
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Saint Lawrence County New York (1)
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Oregon
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Harney County Oregon (1)
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Lake County Oregon (1)
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South Dakota
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Custer County South Dakota (1)
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Utah
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Grand County Utah (1)
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Washington
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Spokane County Washington (1)
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commodities
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bitumens (1)
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corundum deposits (1)
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gems (22)
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glass materials (2)
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metal ores
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chromite ores (1)
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copper ores (1)
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gold ores (2)
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iron ores (1)
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manganese ores (2)
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nickel ores (2)
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vanadium ores (2)
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mineral deposits, genesis (3)
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mineral exploration (1)
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nonmetal deposits (1)
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petroleum
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natural gas (1)
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placers (1)
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quartz crystal (2)
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refractory materials (2)
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ruby (5)
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elements, isotopes
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boron (2)
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carbon
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C-13/C-12 (1)
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chemical elements (2)
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chemical ratios (1)
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halogens
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fluorine (2)
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hydrogen
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deuterium (1)
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isotope ratios (4)
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isotopes
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stable isotopes
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C-13/C-12 (1)
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deuterium (1)
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Fe-57 (1)
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Nd-144/Nd-143 (1)
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O-17 (1)
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O-17/O-16 (1)
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O-18 (1)
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O-18/O-16 (3)
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Si-29 (1)
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metals
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actinides
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thorium (1)
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uranium (2)
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alkali metals
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cesium (3)
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lithium (6)
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sodium (2)
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alkaline earth metals
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barium (1)
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beryllium (3)
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calcium (2)
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magnesium (3)
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strontium (1)
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aluminum (4)
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antimony (1)
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arsenic (2)
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chromium (7)
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cobalt (1)
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copper (4)
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gallium (1)
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iron
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Fe-57 (1)
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ferric iron (30)
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ferrous iron (28)
-
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lead (1)
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manganese (12)
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nickel (2)
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niobium (2)
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rare earths
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neodymium
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Nd-144/Nd-143 (1)
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scandium (1)
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tantalum (1)
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titanium (11)
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vanadium (5)
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zinc (1)
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-
oxygen
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O-17 (1)
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O-17/O-16 (1)
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O-18 (1)
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O-18/O-16 (3)
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selenium (1)
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silicon
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Si-29 (1)
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sulfur (1)
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tellurium (1)
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trace metals (1)
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fossils
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bacteria
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Geobacter (1)
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Shewanella (1)
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ichnofossils
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Chondrites ichnofossils (1)
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-
-
geochronology methods
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Ar/Ar (1)
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Sm/Nd (2)
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thermoluminescence (1)
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U/Pb (2)
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-
geologic age
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Cenozoic
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Quaternary
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Holocene
-
upper Holocene
-
Roman period (1)
-
-
-
-
Tertiary
-
Neogene
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Miocene
-
Columbia River Basalt Group (1)
-
upper Miocene
-
Messinian (1)
-
-
-
-
Paleogene
-
Eocene (1)
-
-
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
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McMurray Formation (1)
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-
Upper Cretaceous (1)
-
-
Jurassic
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Middle Jurassic
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Callovian (1)
-
-
Upper Jurassic
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Oxfordian (1)
-
-
-
Triassic
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Montney Formation (1)
-
-
-
Moldanubian (4)
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Paleozoic
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Carboniferous
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Mississippian (2)
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-
Devonian (1)
-
Ordovician
-
Upper Ordovician (1)
-
-
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Precambrian
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Archean
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Neoarchean (1)
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-
Stillwater Complex (1)
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Transvaal Supergroup (1)
-
upper Precambrian
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Proterozoic
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Neoproterozoic (1)
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-
-
-
-
igneous rocks
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igneous rocks
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carbonatites (1)
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kimberlite (3)
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plutonic rocks
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anorthosite (1)
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granites
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alkali granites (1)
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aplite (1)
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leucogranite (2)
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granodiorites (1)
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ijolite (1)
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lamprophyres (3)
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pegmatite (24)
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syenites
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nepheline syenite (2)
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ultramafics
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peridotites (2)
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porphyry (1)
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volcanic rocks
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basalts (2)
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glasses
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obsidian (2)
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komatiite (1)
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nephelinite (1)
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rhyolites (2)
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-
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ophiolite (1)
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metamorphic rocks
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metamorphic rocks
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eclogite (3)
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gneisses
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biotite gneiss (1)
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orthogneiss (1)
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granulites (1)
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marbles (3)
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metaigneous rocks
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metaperidotite (1)
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metasedimentary rocks
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metapelite (1)
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metasomatic rocks
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skarn (2)
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migmatites
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anatexite (1)
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quartzites (1)
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ophiolite (1)
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meteorites
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meteorites
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stony meteorites
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achondrites
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Martian meteorites
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SNC Meteorites
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chassignite (1)
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nakhlite (1)
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shergottite (1)
-
-
-
-
chondrites
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carbonaceous chondrites
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CV chondrites
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Allende Meteorite (2)
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Efremovka Meteorite (1)
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Vigarano Meteorite (1)
-
-
-
-
-
-
-
minerals
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arsenates
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pharmacolite (1)
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borates
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vonsenite (1)
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carbonates
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calcite (2)
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siderite (1)
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halides
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chlorides
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eudialyte (2)
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fluorides
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clinohumite (1)
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humite (1)
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triplite (1)
-
-
-
iron minerals (1)
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manganese minerals (1)
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minerals (8)
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onyx (1)
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oxides
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baddeleyite (1)
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birnessite (1)
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brookite (1)
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brucite (1)
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corundum (8)
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diaspore (1)
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ferropericlase (1)
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gahnite (3)
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hausmannite (1)
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hematite (1)
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hercynite (3)
-
hydroxides
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schoepite (1)
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iron oxides (3)
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jacobsite (1)
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lepidocrocite (1)
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magnesioferrite (1)
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magnetite (6)
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manganese oxides (1)
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niobates
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aeschynite (1)
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columbite (2)
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pyrochlore (1)
-
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periclase (1)
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perovskite (2)
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rutile (8)
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sapphire (5)
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spinel (7)
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spinel group (3)
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ulvospinel (1)
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uraninite (2)
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phosphates
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apatite (1)
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barbosalite (2)
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crandallite (1)
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fluorapatite (1)
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graftonite (1)
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hureaulite (1)
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lazulite (3)
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lithiophilite (1)
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monazite (2)
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rockbridgeite (1)
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sarcopside (1)
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strengite (1)
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triphylite (1)
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triplite (1)
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turquoise (1)
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vivianite (3)
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xenotime (1)
-
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platinum minerals (1)
-
silicates
-
aluminosilicates (3)
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borosilicates (4)
-
chain silicates
-
aenigmatite group
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rhonite (1)
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sapphirine (1)
-
-
amphibole group
-
clinoamphibole
-
actinolite (1)
-
hastingsite (2)
-
hornblende (2)
-
kaersutite (1)
-
nephrite (1)
-
pargasite (2)
-
tremolite (1)
-
-
-
astrophyllite (2)
-
charoite (1)
-
jade (2)
-
pyroxene group
-
clinopyroxene
-
aegirine (1)
-
diopside (2)
-
hedenbergite (1)
-
jadeite (3)
-
omphacite (1)
-
-
orthopyroxene
-
enstatite (1)
-
ferrosilite (1)
-
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (2)
-
-
plagioclase
-
albite (2)
-
labradorite (2)
-
-
-
myrmekite (1)
-
nepheline group
-
nepheline (2)
-
-
silica minerals
-
agate (1)
-
amethyst (2)
-
carnelian (1)
-
chalcedony (1)
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chrysoprase (1)
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jasper (1)
-
moganite (1)
-
opal
-
opal-A (1)
-
opal-CT (1)
-
-
quartz
-
smoky quartz (2)
-
-
-
sodalite group
-
genthelvite (1)
-
-
zeolite group
-
analcime (1)
-
garronite (1)
-
phillipsite (1)
-
thomsonite (1)
-
-
-
orthosilicates
-
nesosilicates
-
andalusite (2)
-
chondrodite (1)
-
clinohumite (1)
-
dumortierite (3)
-
garnet group
-
almandine (6)
-
andradite (3)
-
grossular (3)
-
majorite (1)
-
pyrope (5)
-
schorlomite (2)
-
spessartine (6)
-
uvarovite (1)
-
-
grandidierite (1)
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humite (1)
-
kyanite (1)
-
olivine group
-
olivine (1)
-
ringwoodite (3)
-
wadsleyite (1)
-
-
sillimanite (3)
-
staurolite (2)
-
titanite group
-
titanite (3)
-
-
zircon group
-
zircon (3)
-
-
-
sorosilicates
-
bertrandite (1)
-
epidote group
-
allanite (1)
-
-
melilite group
-
gehlenite (1)
-
-
vesuvianite (1)
-
-
-
ring silicates
-
aquamarine (4)
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beryl (12)
-
cordierite (6)
-
emerald (2)
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eudialyte (2)
-
joaquinite (1)
-
milarite group
-
osumilite (1)
-
-
tourmaline group
-
dravite (6)
-
elbaite (9)
-
foitite (3)
-
schorl (10)
-
uvite (2)
-
-
-
sheet silicates
-
chlorite group
-
chamosite (2)
-
chlorite (4)
-
-
clay minerals
-
montmorillonite (2)
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nontronite (7)
-
saponite (1)
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smectite (10)
-
-
clintonite (1)
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gillespite (1)
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illite (2)
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margarite (1)
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mica group
-
biotite (3)
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celadonite (2)
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glauconite (2)
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lepidolite (1)
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muscovite (3)
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phlogopite (2)
-
-
palygorskite (1)
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petalite (1)
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serpentine group
-
serpentine (1)
-
-
talc (2)
-
-
-
sulfates
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barite (1)
-
gypsum (1)
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rozenite (1)
-
-
sulfides
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chalcopyrite (2)
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genthelvite (1)
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heazlewoodite (1)
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linnaeite (1)
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pentlandite (2)
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pyrite (2)
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pyrrhotite (1)
-
-
sulfosalts (1)
-
tellurates (1)
-
uranium minerals (2)
-
vanadates (8)
-
-
Primary terms
-
absolute age (4)
-
Africa
-
Cape Verde Islands (1)
-
Central Africa
-
Congo Democratic Republic (1)
-
Rwanda (1)
-
-
East Africa
-
Kenya (1)
-
Mozambique (3)
-
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1-20 OF 211 RESULTS FOR
intervalency charge transfer
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Journal Article
Intervalence charge transfer in aluminum oxide and aluminosilicate minerals at elevated temperatures Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 December 2024
American Mineralogist (2024) 109 (12): 2152–2161.
...Helen V. Evans; George R. Rossman Abstract Single-crystal optical spectra of corundum (Al 2 O 3 ) and the Al 2 SiO 5 polymorphs andalusite, kyanite, and sillimanite, containing both Fe 2+ -Fe 3+ and Fe 2+ -Ti 4+ intervalence charge transfer (IVCT) absorption bands were measured at temperatures up...
Includes: Supplemental Content
Journal Article
Yellow, Mn-rich elbaite with Mn-Ti intervalence charge transfer Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 April 1986
American Mineralogist (1986) 71 (3-4): 599–602.
...George R. Rossman; Stephanie M. Mattson Abstract The color of yellow-green to yellow-brown Mn-rich elbaite tourmalines from Zambia and Nepal is controlled by Fe 2+ -Ti 4+ (brown) and Mn 2+ -Ti 4+ (yellow-green) intervalence charge transfer. The proposed Mn-Ti interaction responsible...
Journal Article
Lavender jade. The optical spectrum of Fe 3+ and Fe 2+ ⤍Fe 3+ intervalence charge transfer in jadeite from Burma Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 August 1974
American Mineralogist (1974) 59 (7-8): 868–870.
...George R. Rossman Abstract The optical spectra of green, white, and lavender jadeite have been studied. Ferric iron is responsible for the color in the green jadeite. It is proposed that ferrous-ferriciron intervalence charge transfer is responsible for the lavender color of jadeite. 1...
Journal Article
Fe 2+ /Fe 3+ Intervalence Charge Transfer and Enhanced d - d Absorption in Mixed Valence Iron Minerals at Elevated Temperatures Free
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 02 July 2025
American Mineralogist (2025)
...Helen V. Evans; George R. Rossman Abstract The absorption of light by Fe/Ti and Fe/Fe intervalence charge transfer (IVCT) bands has previously been found in aluminum oxide and Al 2 SiO 5 aluminosilicate minerals to decrease markedly at elevated temperatures. Given the abundance of iron at depth...
Early Publication
Journal Article
Single-crystal UV/Vis absorption spectroscopy of aluminosilicate garnet: Part III. {Fe 2+ } + [Fe 3+ ] → {Fe 3+ } + [Fe 2+ ] intervalence charge transfer Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 June 2023
American Mineralogist (2023) 108 (6): 1171–1181.
...Charles A. Geiger; Michail N. Taran Abstract The various intervalence charge transfer (IVCT) mechanisms that can occur in silicate garnet, general crystal-chemical formula {X 3 }[Y 2 ](Z 3 )O 12 , are not fully understood. The single-crystal UV/Vis/NIR absorption spectra of two different almandine...
Image
Fingerprint of the clay minerals. The ratio of intervalence charge transfer... Available to Purchase
in GREEN EARTH PIGMENT FROM THE KADAŇ REGION, CZECH REPUBLIC: USE OF RARE Fe-RICH SMECTITE
> Clays and Clay Minerals
Published: 01 December 2004
Figure 7. Fingerprint of the clay minerals. The ratio of intervalence charge transfer (IVCT) band III to band IV is plotted against the ratio of divalent and trivalent Fe in the structure. The smectites free of Fe 2+ are located in point [0,0].
Journal Article
Optical absorption study of natural garnets of almandine-skiagite composition showing intervalence Fe 2+ + Fe 3+ → Fe 3+ + Fe 2+ charge-transfer transition Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 May 2007
American Mineralogist (2007) 92 (5-6): 753–760.
...Michail N. Taran; M. Darby Dyar; Stanislav S. Matsyuk Abstract A broad (FWHM ≈ 7300 cm −1 ) intense band at ~21 700 cm −1 in the optical absorption spectra of natural Fe 2+ , Fe 3+ -rich garnets is attributed to electronic intervalence charge-transfer transitions (IVCT), VIII Fe 2+ + VI Fe 3...
Journal Article
CRYSTAL CHEMISTRY OF DARK BLUE AQUAMARINE FROM THE TRUE BLUE SHOWING, YUKON TERRITORY, CANADA Available to Purchase
Lee A. Groat, George R. Rossman, M. Darby Dyar, David Turner, Paula M.B. Piccoli, Arthur J. Schultz, Luisa Ottolini
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 June 2010
The Canadian Mineralogist (2010) 48 (3): 597–613.
... of blue beryl is due to intervalence charge-transfer (IVCT) between Fe 2+ and Fe 3+ cations. The anisotropy of the optical absorption spectra suggest that if the mechanism responsible for the color in our samples is IVCT, the vector between the ions involved must be oriented approximately parallel to c...
Journal Article
Optical and near infrared spectra of ringwoodite to 21.5 GPa: Implications for radiative heat transport in the mantle Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 July 2005
American Mineralogist (2005) 90 (7): 1209–1212.
... −1 . With increasing pressure, both the crystal field and the charge transfer bands shift to higher frequencies. Whereas this is expected for the crystal field bands, this blue shift is surprising for an intervalence charge transfer band. Moreover, neither the crystal field nor the charge transfer...
Journal Article
VIOLET-COLORED DIOPSIDE FROM SOUTHERN BAFFIN ISLAND, NUNAVUT, CANADA Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 October 2000
The Canadian Mineralogist (2000) 38 (5): 1193–1199.
... indicating 0.30 wt.% H 2 O in the structure, is (Ca 0.96 Na 0.04 )(Mg 0.86 Al 0.06 Fe 2+ 0.05 Ti 4+ 0.02 )(Si 1.89 Al 0.11 )O 5.93 OH 0.07 . The unusual color is due to intervalence charge-transfer between Fe 2+ and Ti 4+ at the M 1 site, and is observed owing to the low overall concentration of Fe...
Journal Article
Crystal-field and charge-transfer spectra of (Mg,Fe)SiO 3 perovskite Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 December 1994
American Mineralogist (1994) 79 (11-12): 1215–1218.
... is centered at 7000 cm −1 , which is caused by the transition 5 E g → 5 T 2g of Fe 2+ in the dodecahedral site of the structure. (2) A broad band due to Fe 2+ → Fe 3+ intervalence charge transfer occurs at 14900 cm −1 . (3) A sharp increase in absorption above 20000 cm −1 probably results from O-Fe 3+ charge...
Journal Article
Channel constituents in cordierite Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 December 1977
American Mineralogist (1977) 62 (11-12): 1144–1157.
... is found to correlate to the amount of cations in the channels. Optical spectra provide a measure of the hexagonality of cordierite, but these measurements are not correlated with the distortion index, Δ. The color and pleochroism are suggested to arise from intervalence charge-transfer between octahedral...
Journal Article
Coupled H and Nb, Cr, and V trace element behavior in synthetic rutile at 600 °C, 400 MPa and possible geological application Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 January 2013
American Mineralogist (2013) 98 (1): 7–18.
... has a broad absorption band at 6500 cm −1 wavenumber attributed to intervalence charge transfer transition Ti 3+ +Ti 4+ → Ti 4+ +Ti 3+ . The reduction of Ti 4+ to Ti 3+ is charge balanced by the incorporation of H + . The Nb-doped rutile changed its color from light greenish-blue (untreated) to deep...
Journal Article
Titanium incorporation and VI Ti 3+ - IV Ti 4+ charge transfer in synthetic diopside Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 November 2006
American Mineralogist (2006) 91 (11-12): 1794–1801.
... in the crystallographic b -direction, we assign this band to an M1 Ti 3+ - T Ti 4+ intervalence charge transfer process. * E-mail: [email protected] 01 06 2006 17 11 2005 © 2006 American Mineralogist 2006 Crystal synthesis diopside optical spectroscopy pyroxene major and minor...
Journal Article
Electronic structure of Fe-bearing lazulites Available to Purchase
M. Grodzicki, G.J. Redhammer, G. Amthauer, V. Schünemann, A.X. Trautwein, B. Velickov, P. Schmid-Beurmann
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 April 2003
American Mineralogist (2003) 88 (4): 481–488.
.... The optical spectrum of barbosalite can be resolved into three peaks at 8985 cm −1 , 10980 cm −1 , and 14110 cm −1 . These positions correlate well with the two calculated spin-allowed d-d transitions at 8824 cm −1 and 11477 cm −1 , and with an intervalence charge transfer transition at about 14200 cm −1...
Journal Article
Temperature-dependent absorption of biotite: small-polaron hopping and other fundamental electronic excitations Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 September 2012
European Journal of Mineralogy (2012) 24 (5): 817–822.
... polarons to Fe 2+ –Fe 3+ intervalence-charge transfer and Fe 2+ d–d transitions with decreasing temperature. The loss in oscillator strength of PAH is related to a pinning of the polarons due to the decreasing number in lattice vibrations in thermal equilibrium. The absorption spectra of two natural...
Journal Article
Blue growth zones caused by Fe 2+ in tourmaline crystals from the San Piero in Campo gem-bearing pegmatites, Elba Island, Italy Open Access
Journal: Mineralogical Magazine
Published: 22 August 2022
Mineralogical Magazine (2022) 86 (6): 910–919.
...+ , and no intervalence charge transfer Fe 2+ -Ti interactions, indicating that Fe 2+ is the only chromophore. Mössbauer analysis of the blue zone of the Fucili sample confirmed the Fe 2+ oxidation state, implying that the redox conditions in the crystallisation environment were relatively reducing. The presence...
Journal Article
Polygenic chamosite from a hydrothermalized oolitic ironstone (Saint-Aubin-des-Châteaux, Armorican Massif, France): crystal chemistry, visible–near-infrared spectroscopy (red variety) and geochemical significance Available to Purchase
Journal: Clay Minerals
Published: 13 May 2020
Clay Minerals (2020) 55 (1): 83–95.
... . This chamosite is strongly pleochroic, from pale yellow ( E || (001)) to deep orange red ( E ⊥ (001)). Visible–near-infrared absorbance spectra show a specific absorption band centred at ~550 nm for E ⊥ (001), due to a proposed new variety of Fe/V intervalence charge-transfer mechanism in the octahedral sheet...
Journal Article
FERRO-FERRI-NYBØITE, NaNa 2 (Fe 2+ 3 Fe 3+ 2 )(Si 7 Al)O 22 (OH) 2 , A NEW CLINOAMPHIBOLE FROM MONT SAINT-HILAIRE, QUÉBEC, CANADA: DESCRIPTION AND CRYSTAL STRUCTURE Available to Purchase
Aaron J. Lussier, Frank C. Hawthorne, Yassir A. Abdu, Neil A. Ball, Kimberly T. Tait, Malcolm E. Back, Anthony H. Steede, Rebecca Taylor, Andrew M. McDonald
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 22 June 2015
The Canadian Mineralogist (2014) 52 (6): 1019–1026.
...-fluorescent with perfect {110} cleavage, no observable parting, and has a calculated density of 3.424 g/cm 3 . Crystals show extreme optical absorption due to intervalence charge transfer, which inhibited measurement of optical properties. Ferro-ferri-nybøite is monoclinic, space group C 2/ m , a 9.9190(5), b...
Journal Article
Crystallographic and spectroscopic characterization of a natural Zn-rich spinel approaching the endmember gahnite (ZnAl 2 O 4 ) composition Available to Purchase
Journal: Mineralogical Magazine
Published: 01 October 2013
Mineralogical Magazine (2013) 77 (7): 2941–2953.
...-forbidden electronic transitions in T Fe 2+ and to M Fe 2+ ↔ M Fe 3+ intervalence charge transfer, and the poor saturation of the colour is due to the small concentration of Fe 2+ and Fe 3+ . * E-mail: [email protected] 18 4 2013 13 8 2013 © 2013 The Mineralogical...
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