Russian Mineralogical Society
RMS Annual Session combined with the Fedorov Session 2012
Mineralogy of the Karyer Koykary gold occurrence (Karelia): Genetic and metallogeni˝ aspects

RMS-DPI code:  2012-1-43-0
Scientific session:  M2. Mineralogical and petrological markers of the mineral/rock genesis. Minerals, ores and rocks as fingerprints
Author listing:  Ivashchenko V.I., Golubev A.I., Romashkin A.E., Ibragimov M.M.
Principal author:  Ivashchenko Vasily I.
Language:  Russian
Abstract - Summary 
(short description):


Ivashchenko V.I., Golubev └.I., Romashkin └.┼., Ibragimov ╠.╠.

The Koikary Quarry gold occurrence is located in the Vedlozero-Segozero greenstone belt of the Archaean Karelian Craton. Auriferous pyrite mineralization, similar to that of the Pedrolampi deposit, is confined to a system of fault displacements of different directions, whose chronological order of formation is complex and contradictory. Finely dispersed (1-10 μm) native gold (grade 500->900) is concentrated dominantly in pyrite. The ore occurrence was found to contain over 60 ore minerals dominated by Cu, Ni, Co, Zn, Pb and Mo sulphides and minor arsenides, tellurides and bismuthotellurides, antimony sulphosalts, silver and native metal minerals, Fe, Ti, Cu and Mn oxides and hydroxides, hypergene sulphates and carbonates, etc. The data obtained show that the ore occurrence is of polygenic-polychronous orogenic mesothermal type with the involvement of pyrite mineralization as a basic auriferous formation.
Date of presentation:  08/10/2012
Presentation Place:  Mining University, foyer of the Assembly Hall
RMS-DPI code:  2012-1-43-0
Proceeedings volume 
in the RMS catalogue:
Mineralogy in Ó whole space of the word.
File of proceedings 
 216 K
Status:  printed
Revised:  23/07/2012
Accepted:  28/08/2012
Published on-line:  28/10/2012
Permanent address of publication:
Contact author(s):  Ivascchenko, Vasily I.

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