Russian Mineralogical Society
2nd International Conference "Crystallogenesis and Mineralogy"
Mineralogical indicators of a degree of completion of ore-forming metasomatic processes in gold ore deposits of the Verkhoyansk-Kolyma fold area

RMS-DPI code:  2007-1-104-0
Scientific session:  Session 5. Crystal chemistry and crystal morphology of minerals
Author listing:  Alpatov V.V.
Principal author:  Alpatov Valery Vladimirovich
Language:  Russian
Abstract - Summary 
(short description):
In gold ore deposits of the region, metasomatic ores formed during the early beresite-type infiltration metasomaism and the late near-vein diffusion metasomatism, are differently abundant. Dependent on a degree of completion of metasomatic process, the early infiltration mineralization is able to form complete and incomplete metasomatic columns. Along with elevated contents of prismatic arsenopyrite (> 1-2%), the rocks from inner zones of complete columns with auriferous pyrite and prismatic pyrite representing the commercial impregnated ores are characterized by a high concentration of sulfide iron (> 50%), reduced iron content in carbonates and sericite syngenetic to sulfides (< 0,2), pentagonal dodecahedron habit of late generations of pyrite metacrystals and their elevated gold and arsenic contents (> 2 mass %).
RMS-DPI code:  2007-1-104-0
Proceeedings volume 
in the RMS catalogue:
Crystallogenesis and Mineralogy
Pages:  222-224
File of proceedings 
 256 K
Status:  printed
Accepted:  16/05/2007
Published on-line:  05/01/2008
Permanent address of publication:
Contact author(s):  Alpatov, Valery Vladimirovich

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