Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
European Journal of Mineralogy Signup for GSW Email News
JOURNAL HOME HELP FEEDBACK/COMMNET SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
European Journal of Mineralogy; December 1999; v. 11; no. 6; p. 937-947
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Tauson, V. L.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Gold solubility in the common gold-bearing minerals; experimental evaluation and application to pyrite

Vladimir L. Tauson

Russian Academy of Sciences, A. P. Vinogradov Institute of Geochemistry, Irkutsk, Russian Federation

A method is proposed for determining gold solubility in the common gold-bearing minerals (sulfides, etc.) using so-called "gold-assisting elements" (GAE). These elements increase gold solubility in the fluid phase, enabling minerals formed from hydrothermal fluids to be saturated with gold. Two experimental approaches are discussed: (1) identifying the solid-solution limit of gold in a mineral structure by determining the maximum content of uniformly distributed gold constituent which remains unchanged with increasing gold content in the coexisting fluid phase, and (2) determining the gold distribution between the mineral under study and a reference mineral with a sufficiently high and well-defined solid-solution limit of gold and utilizing the phase composition correlation principle. Statistical treatment of analytical data for single crystals permits inference of the structurally bound gold constituent. Greenockite (alpha -CdS) incorporates a maximum of 50 + or -7 ppm Au in solid solution at 500 degrees C and 1 kbar and this is used as a reference mineral to determine gold solubility in pyrite under the same conditions in the presence of As and Se as gold-assisting elements. The value obtained for gold solubility in pyrite (3+ or -1 ppm Au) is in reasonable agreement with the results of ion-probe microanalysis of natural pyrites. The data suggest that monovalent gold substitutes for divalent iron, giving rise to an acceptor center compensated by a donor defect, either a sulphur vacancy or a hydro-sulphide ion replacing S (super 2-) 2 .

This record provided courtesy of AGI/GeoRef.




This article has been cited by other articles:


Home page
 Exploration and Mining GeologyHome page
A.R. Foster, P.J. Williams, and C.G. Ryan
Distribution of Gold in Hypogene Ore at the Ernest Henry Iron Oxide Copper-Gold Deposit, Cloncurry District, NW Queensland
Exploration and Mining Geology, July 1, 2007; 16(3-4): 125 - 143.
[Abstract] [Full Text] [PDF]

Home page
 Eur J MineralHome page
V. L. TAUSON, I. Yu. PARKHOMENKO, D. N. BABKIN, V. I. MEN'SHIKOV, and E. E. LUSTENBERG
Cadmium and mercury uptake by galena crystals under hydrothermal growth: A spectroscopic and element thermo-release atomic absorption study
European Journal of Mineralogy, August 1, 2005; 17(4): 599 - 610.
[Abstract] [Full Text] [PDF]

Home page
 Mineral MagHome page
J. Zacharias, J. Zacharias, J. Fryda, B. Paterova, and M. Mihaljevic
Arsenopyrite and As-bearing pyrite from the Roudny deposit, Bohemian Massif
Mineralogical Magazine, February 1, 2004; 68(1): 31 - 46.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP FEEDBACK/COMMNET SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by E. Schweizerbart'sche Verlagsbuchhandlung Science Publishers