Understanding gold-(silver)-telluride-(selenide) mineral deposits
Date
2009
Authors
Cook, N.
Ciobanu, C.
Spry, P.
Voudouris, P.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Episodes: journal of international geoscience, 2009; 32(4):249-263
Statement of Responsibility
Nigel J. Cook, Cristiana L. Ciobanu, Paul G. Spry, Panagiotis Voudouris and the participants of IGCP-486
Conference Name
Abstract
Gold-(silver)-telluride (selenide) ores occur as epithermal orogenic and intrusion related deposits. Although Te and Se are chalcophile elements and share geochemical affinity with Au, formation of selenides and other elements Ag-Au require acidic or reducing enfironments. The thermodynamic stability conditions for Au and Ag-tellurides and native tellurium indicate an epithermal environment. Analysis of mineral paragenensis, textures and compositional variation in tellurides/selenides suggest petrogenetic processes involving interaction with fluids leading to Au scavenging and entrapment in tellurides, changes in chemistry/rates of fluid infiltration and attaining equilibrium in a given assemblage.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
Copyright 2009 International Union of Geological Sciences