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- W2349015532 abstract "Large amounts of fine disseminated and veinlet pyrite and chalcopyrite with the presence of tennantite occur in the unoxidized zone below the oxidized zone in the Dashui gold deposit.Pyrite,chalcopyrite and other sulfides were oxidized into hematite in the oxidized ores.Electron microprobe analysis indicates that gold is richening in pyrite,chalcopyrite and tennantite.Co/Ni ratios from pyrite are mostly greater than 2,being consistent with those of magma-type pyrite.Fluid inclusion data in calcite indicate that homogenization temperatures are about 105℃ to 400℃.Isotopic data show that δ34S values of pyrite range from-1.8‰ to +4.1‰,δ13C values of calcite from-2.7‰ to +4.3‰,and δ18O and δD values of calcite from +6.63‰ to +19.42‰ and-101‰ to-75‰,respectively.Ore-forming fluids were largely magma water.Carbon,sulfur and metallogenic elements chiefly came from the hosted diorite.The gold deposit is a sulfides-rich diorite-type.Tennantite may be served as an important indicator for ore searching and prospecting." @default.
- W2349015532 created "2016-06-24" @default.
- W2349015532 creator A5008312038 @default.
- W2349015532 date "2007-01-01" @default.
- W2349015532 modified "2023-09-28" @default.
- W2349015532 title "MINERAL GEOCHEMISTRY IN THE DASHUI DIORITE-TYPE GOLD DEPOSIT,GANSU PROVINCE" @default.
- W2349015532 hasPublicationYear "2007" @default.
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