Contrasting fluid systems, chemical gradients and controls on large-tonnage, high-grade Au deposits, Eastern Goldfields Province, Yilgarn Craton, Western Australia

被引：0

作者：

Walshe, JL ^{[1
]}

Halley, SW ^{[1
]}

Hall, GA ^{[1
]}

Kitto, P ^{[1
]}

机构：

[1] CSIRO, Div Explorat & Min, Perth, WA, Australia

来源：

MINERAL EXPLORATION AND SUSTAINABLE DEVELOPMENT, VOLS 1 AND 2 | 2003年

关键词：

contrasting fluids; redox; mixing; gradients; gold;

D O I：

暂无

中图分类号：

P57 [矿物学];

学科分类号：

070901 ;

摘要：

Large-tonnage, high-grade gold deposits in the Eastern Goldfields Province result from the interplay of two chemically contrasting fluid systems. Oxidized magmatic hydrothermal fluids (brines and vapours) were sourced from 2665-2650 Ma mafic and syenitic granite-magmas. Chemically contrasting, anhydrous and reduced fluids, composed dominantly of H-2 - H2S +/- CH4, were sourced from the deep crust/mantle. An emerging understanding of the architectural and geodynamic controls on the interaction of the two fluid systems is providing a conceptual framework to aid exploration for major gold resources.

引用

页码：827 / 830

页数：4

共 14 条

[1] Clout JMF, 1989, THESIS MONASH U
[2] Epithermal Au-Ag-Te mineralization, Acupan, Baguio district, Philippines: Numerical simulations of mineral deposition
Cooke, DR
McPhail, DC
[J]. ECONOMIC GEOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS, 2001, 96 (01): : 109 - 131
[3] GEBREMARIAM M, 1994, THESIS U W AUSTR
[4] GOLDING SD, 1984, UNPUB STABLE ISOTOPE
[5] GROVES DI, 1993, CRUSTAL CINTINUUM MO, V28, P36
[6] HO SE, 1990, NATURE ORE FLUID TRA, V20, P198
[7] MERNAGH TP, 1996, 13 AUSTR GEOL CONV C, P292
[8] Hydrothermal transport and depositional processes in Archean lode-gold systems: A review
Mikucki, EJ
[J]. ORE GEOLOGY REVIEWS, 1998, 13 (1-5) : 307 - 321
[9] NEUMAYR P, 2003, CAMP DEPOSIT SCALE Z
[10] Polito P.A., 1999, THESIS U ADELAIDE

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