Producer

Kochkar Deposit

Kazakhstan
GoldPGESilverArsenicCopperAntimonyLeadCobaltMolybdenumTungstenBismuth
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
SecondaryPGE, Silver
TertiaryArsenic, Copper, Antimony, Lead, Cobalt, Molybdenum, Tungsten, Bismuth
Commodity typeM
Deposit
Deposit sizeL
Orebody formIRREGULAR DIKES AND FRACTURE FILLED VEINS
Ore controlDikes And Fractures.
Materials
Ore mineralsChalcopyrite, Cobaltite, Galena, Gold, Marcasite, Molybdenite, Pyrite, Pyrrhotite, Scheelite, Tetradymite
GangueQuartz, Tourmaline
Geology
Host rockGranite · Kochkar
Associated rockGreenstone,Volcanic Rock (Aphanitic),Granite · Demarinskiye Massif;;;;;;
StructureMajor Massif Of Plagioclase Granite, Intruded Dikes Along Shear Fractures
Tectonic settingTwo Conjugate Systems Of Shear Fractures: One Strikes Ne And Dips Steeply To The Se; The Other Strikes Nw And Dips To The Ne.
AlterationSilicification, Carbonitization. Dike Rocks Altered To Friable "Tobashka" - "Tobacco Color" Alteration Consisting Of Biotite, Phlogopite, Amphibole, And Feldspar With Some Epidote, Sphene, Chlorite, Tourmaline, Apatite, Calcite And Rutile. The Total Number Of Dikes Altered To Friable "Tobashka" Exceeds 1500. The Total Thickness Of Altered Dikes Reaches 2500 M. Swarms Of Dikes Occur In Zones Striking Ne And Ew.
Economic & production
Development statusProducer
Identification
Deposit ID10085921
MRDS IDW701772
RegionAS
Data scoreB
Coordinates49.08145, 49.71817
References
MAGAK'YAN, I.G., 1968, ORE DEPOSITS: IGR, V. 10, N.9, P. 141-202