CHEMISTRY OF GOLD-SILVER ALLOYS RELATED TO HYDROTHERMAL STAGES IN THESALSIGNE GOLD DEPOSIT (AUDE, FRANCE)

Authors
DEMANGE M ARMAND J
Citation
M. Demange et J. Armand, CHEMISTRY OF GOLD-SILVER ALLOYS RELATED TO HYDROTHERMAL STAGES IN THESALSIGNE GOLD DEPOSIT (AUDE, FRANCE), Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 323(1), 1996, pp. 49-56
Citations number
18
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
323
Issue
1
Year of publication
1996
Pages
49 - 56
Database
ISI
SICI code
1251-8050(1996)323:1<49:COGART>2.0.ZU;2-Y
Abstract
In the Salsigne gold deposit (Aude, France), gold-silver alloys show c ompositions directly in relation with the associated hydrothermal stag e: the gold content of these alloys decreases progressively from value s higher than 85 atomic percent for the early biotitization stage to v alues of 29 to 38 atomic percent for the late chalcopyrite-sphalerite stage. This evolution is related to the decrease of temperatures durin g hydrothermal history, but also reflects variations of the Au/Ag rati o in the fluids.