1-20 OF 88 RESULTS FOR

Andesite-H2O-CO2-O2

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 22 January 2025
American Mineralogist (2025)
... of lithophile trace 1130 elements between H2O and H2O + CO2 fluids and topaz rhyolite melt. Economic 1131 Geology, 84, 116 134. 1132 Webster, J.D., Tappen, C.M., and Mandeville, C.W. (2009) Partitioning behavior of 55 Always consult and cite the final, published document. See http:/www.minsocam.org...
Journal Article
Published: 01 May 2007
American Mineralogist (2007) 92 (5-6): 713–721.
... elements, resulting in totals <8 apfu, the above formula is also compatible with some vacancies at the alkali sites in the hexagonal-openings of the cancrinite-type cages. In this case, the charge deficit at O2 would be compensated via some substitution of Al by Si at the Al sites closer to the vacant...
FIGURES | View All (8)
Journal Article
Journal: GSA Bulletin
Published: 25 October 2024
GSA Bulletin (2024)
.... The ultrapotassic rocks supply a large-volume of external magmatic volatiles, particularly H2O, which could trigger melting of the Tibetan lower crust and lead to the generation of the ore-forming granitoids and the establishment of oxidizing conditions for porphyry deposits. The oxygen fugacity (log O2 values...
Journal Article
Published: 01 October 1990
Jour. Geol. Soc. India (1990) 36 (4): 365–382.
... lyenlt. d)'ll . . bo ~0120 Ma} e-s. . Alkali olivlnl bolalt, hawoiltl ijv'wY:f"uJlI(pt~~aMma~rfon{ Malonl \/olcal'llc. and rrOCh, andt, Rhwolltl' Rh,Ollt. tuff Art,r C"andra..llaran, 1917 Figure 1. Geological map of the area around Sarnu-Dandali, Rajasthan. India, trachy-andesite, trachyte and intruded...
Journal Article
Published: 01 July 2002
American Mineralogist (2002) 87 (7): 813–821.
...Charles W. Mandeville; James D. Webster; Malcolm J. Rutherford; Bruce E. Taylor; Adrian Timbal; Kevin Faure Abstract We have determined infrared molar absorptivities for water absorption bands in Fe-bearing and Fe-free andesitic glasses. Water dissolves in andesitic glasses as both hydroxyl groups...
FIGURES | View All (5)
Journal Article
Published: 01 August 2002
American Mineralogist (2002) 87 (8-9): 1077–1089.
... for determining the C-O-H volatile contents of andesitic glasses are compared: manometry, secondary ion mass spectrometry, micro-Fourier transform infrared spectroscopy, and a technique where the H 2 O content is calculated using the difference between electron microprobe analysis totals and 100% sum. We present...
FIGURES | View All (6)
Journal Article
Journal: Economic Geology
Published: 01 June 2005
Economic Geology (2005) 100 (4): 733–764.
... sporadically over approximately 15 km 2 ( Fig. 1C ) and cut by minor aplite, andesite, and recently discovered alkaline dikes. The petrography of the granite is described in the Appendix. Exploration by Minera TEA (1968) exposed the contact between marble and granite; some of the best outcrops that show...
FIGURES | View All (16)
Journal Article
Published: 23 November 2021
Journal of the Geological Society (2022) 179 (3): jgs2021-077.
... [ H ] ( ads ) → H 2 ( gas ) . (R6) At T  < 400°C there is significant deuterium isotopic fractionation between water and H 2 (either thermodynamically or kinetically governed), with a fractionation factor α H2O–H2 between −765 and −375‰ ( Pester et al. 2018...
FIGURES | View All (11)
Journal Article
Published: 01 January 2008
Reviews in Mineralogy and Geochemistry (2008) 69 (1): 363–402.
... data by Moore (2008) . Figure 6. Inverse correlation of CO2 and H2O in vapor-saturated basaltic melt at various constant pressures and 1200 °C. Solid curves are each for a different constant pressure (vapor saturation isobars). Dashed curves show isopleths of constant vapor composition. Both...
FIGURES | View All (15)
Journal Article
Journal: GSA Bulletin
Published: 01 May 2003
GSA Bulletin (2003) 115 (5): 581–595.
... as is evident by the surface resorption features for sphene in latites. Additionally, recrystallization is more likely for sphene than for zircon because sphene is made of major elements of the melt (Ca, Ti, Si) and is stable in the narrower field of P-T-f O2 ( Xirouchakis and Lindsley, 1998 ). Zircon is made...
FIGURES | View All (10)
Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2012
DOI: 10.5382/SP.16.21
EISBN: 9781629490410
... of basalt and rhyo-lite are presented as limiting cases. Fig. 11. The solubility behavior of CO2 and H2O in mafic silicate melt during closed- and open-system degassing at Mount Etna ( Spilliaert et al., 2006 ). The data indicate that progressive degassing results is continued, increasing the H 2 O...
FIGURES | View All (14)
Journal Article
Journal: Economic Geology
Published: 01 December 2003
Economic Geology (2003) 98 (8): 1535–1574.
... subduction, formed at ~7 Ma in the Farallón Negro volcanic field, which was active as volcanism was waning regionally above the flattening subduction zone. Reconstruction of volcanic structure suggests that the top of the exposed orebody was emplaced beneath about 2.5 km of andesite and dacite...
FIGURES | View All (15)
Journal Article
Published: 01 December 2002
Mineralogical Magazine (2002) 66 (6): 969–984.
...; Hornig-Kjarsgaard et al. , 1993 ), and consists of well sorted air-fall deposits with minor surges, flow deposits and intercalated lahars. The gabbroic nodules investigated are from the top layer of an orange fall unit (up to 20 m thick) where the amphibole-bearing pumiceous scoria has a high-K andesite...
FIGURES | View All (5)
Journal Article
Published: 01 February 2008
European Journal of Mineralogy (2008) 20 (1): 101–118.
...Faruk Aydin Abstract The Nigde volcanic province in central Turkey comprises four separate stratovolcanoes (Tepeköy, Cinarli, Melendiz and Keciboyduran) of Mio-Pliocene age (MPv) and several monogenetic cones of Pleistocene age (Pv). The MPv rocks are composed of large volume of andesitic lavas...
FIGURES | View All (10)
Journal Article
Journal: SEG Discovery
Published: 01 July 2011
SEG Discovery (2011) (86): 1–64.
... reac- SO24 ) and sulfide (H2S, HS , and S2 references therein). By contrast, at tions: These species (together with chloride) higher temperature, a new sulfur aque- are regarded as the key agents control- ous species, the trisulfur S3 radical ion, S3 + 0.75 O2 + 2.5 H2O = 2 H2S + SO24 + H+ ling...
Journal Article
Published: 01 January 2010
Reviews in Mineralogy and Geochemistry (2010) 72 (1): 311–408.
... melts at 1193 K and 1 GPa, which are not meant to be accurate. Data in these papers are excluded from quantitative treatment because of the large scatter. In the text and figures below, melt compositions will be referred to using simple terms such as basalt, andesite, dacite, and rhyolite...
FIGURES | View All (74)
Journal Article
Published: 01 July 1981
Journal of the Geological Society (1981) 138 (4): 407–420.
.... Geol. Chicago 1977 85 625 31 EGGLER D. H. BURNHAM C.W. Crystallization and fractionation trends in the system andesite-H 2 O-CO 2 -O 2 at the pressure to 10 kb Bull. geol. Soc. Am 1973 84 2517 32 FAURE G. POWELL J. L. Strontium isotope geology 1972 New York...
Journal Article
Journal: SEG Discovery
Published: 01 October 2023
SEG Discovery (2023) (135): 1–76.
... in partly oxidized metal-sulfate minerals (Nordstrom, 2011). These minerals are highly soluble and can be a source of acid sulfate and metal-rich water upon dissolution and hydrolysis for example, the dissolution of melanterite: 4Fe2+SO4 · 7H2O + 5 O2 = 4FeO(OH) + 4SO42 + 8H+ + H2O. (5) The ability...
Journal Article
Journal: Geology
Published: 01 July 2015
Geology (2015) 43 (7): 591–594.
... A. , 2013 , Magmatic origin of giant ‘Kiruna-type’ apatite-iron-oxide ores in Central Sweden : Nature Scientific Reports , v. 3 , p. 1644 – 1652 , doi:10.1038/srep01644. Martel C. Pichavent M. Holtz F. Scaillet B. , 1999 , Effects of f O2 and H 2 O on andesite phase relations...
FIGURES | View All (4)
Journal Article
Published: 01 July 2024
Reviews in Mineralogy and Geochemistry (2024) 90 (1): 323–373.
.... in revision): (14) H 2 + 1 / 2 O 2 ⇄ H 2 O (23) H 2 ( Vapor ) ⇄ H 2 ( melt ) Hirschmann et al. (2012) determined solubility of H 2 for a basaltic and an andesitic melt over a pressure range of 0.7–3 GPa and a temperature...
FIGURES | View All (16)