Russian Mineralogical Society
2nd International Conference "Crystallogenesis and Mineralogy"
Crystallochemical characteristics of copper sulfides in ores of different genesis

RMS-DPI code:  2007-1-114-0
Scientific session:  Session 5. Crystal chemistry and crystal morphology of minerals
Author listing:  Gablina I.F.
Principal author:  Gablina Irina F.
Language:  Russian
Abstract - Summary 
(short description):
Identification of copper sulfides from sulfide ores of different genesis was performed and the published data on their synthesis, stability, and crystallochemical characteristics were examined. Two series are distinguished: the chalcocite-digenite (Cu2S- Cu1.75S) series (Cu-rich sulfides) and the geerite-covellite (Cu1.6S- CuS) series (Cu-poor sulfides).
The confinement of Cu-rich sulfides to primary ores and Cu-poor sulfides to hypergene-altered ores is revealed.
At the same time stoichiometric chalcosite and minerals with the crystalline structure based on the sulfur cubic sublattice (diagenite, tetragonal Cu2S) are more common for high-temperature ore formation conditions. Non-stoichiometric copper sulfides with the structure based on hexagonal anion sublattice (djurleite, roxbyite, spioncopite, yarrowite) are typomorphic for exogenic low-temperature conditions. Such specialization of distribution of copper sulfides in nature may be caused by their different temperature and chemical resistance.
 
RMS-DPI code:  2007-1-114-0
Proceeedings volume 
in the RMS catalogue:
 
Crystallogenesis and Mineralogy
Pages:  244-246
File of proceedings 
(PDF): 
 257 K
Status:  printed
Accepted:  24/05/2007
Published on-line:  05/01/2008
Permanent address of publication:  http://www.minsoc.ru/2007-1-114-0/
Contact author(s):  Gablina, Irina F.

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