: Zinccopperite (tentatively named) is a rare native alloy mineral discovered in quartz monzonite—porphyry in the Xifanping area, Yanyuan County, Sichuan Province. It is a new variety of zinc—copper alloy mineral fo...: Zinccopperite (tentatively named) is a rare native alloy mineral discovered in quartz monzonite—porphyry in the Xifanping area, Yanyuan County, Sichuan Province. It is a new variety of zinc—copper alloy mineral found for the first time in the porphyry-copper deposit in China. Its intergrown minerals are K—feldspar (mainly perthite), albite—oligoclase, quartz and biotite; and the associated minerals include pyrite and chalcopyrite. It is characterized by a golden reflection colour, being isotropic (isometric), with the grain size ranging from 10 to 50 μm, microhardness VHN10 = 190 kg/mm2, and reflectance RVM = 67.97%. Electron microprobe (Model JXA—733) analysis shows Cu = 59.15%–62.55% and Zn = 36.32%–39.85%. The crystallochemical formula is Cu6.27-7.0Zn4.0, simplified as Cu7Zn4.展开更多
1 Geological features in the deposit THE Xifanping porphyry is located in the Yanyuan-Lijiang fault block at the southern margin of theYangtze massif. Only the Upper Permian Leping Formation and the Lower Triassic Qin...1 Geological features in the deposit THE Xifanping porphyry is located in the Yanyuan-Lijiang fault block at the southern margin of theYangtze massif. Only the Upper Permian Leping Formation and the Lower Triassic Qingtianbao Formation are exposed in Yanyuan County, Sichuan Province. The main ore-bearing rock body (No. 80) is anear-equant irregular complex stock, about 900 m long from east to west and 720 m wide from north tosouth. The bulk part consists of megaphyric biotite-quartz monzonitic porphyry. The commercial orebodylies in the No. 80 rock body and its surrounding country rocks, an N-S-elongated irregular lens-shapeddeposit. The orebody is controlled by the K-feldspar-biotite and quartz-sericite alteration zones. It consists mainly of disseminated and veinlet-disseminated ores.展开更多
文摘: Zinccopperite (tentatively named) is a rare native alloy mineral discovered in quartz monzonite—porphyry in the Xifanping area, Yanyuan County, Sichuan Province. It is a new variety of zinc—copper alloy mineral found for the first time in the porphyry-copper deposit in China. Its intergrown minerals are K—feldspar (mainly perthite), albite—oligoclase, quartz and biotite; and the associated minerals include pyrite and chalcopyrite. It is characterized by a golden reflection colour, being isotropic (isometric), with the grain size ranging from 10 to 50 μm, microhardness VHN10 = 190 kg/mm2, and reflectance RVM = 67.97%. Electron microprobe (Model JXA—733) analysis shows Cu = 59.15%–62.55% and Zn = 36.32%–39.85%. The crystallochemical formula is Cu6.27-7.0Zn4.0, simplified as Cu7Zn4.
文摘1 Geological features in the deposit THE Xifanping porphyry is located in the Yanyuan-Lijiang fault block at the southern margin of theYangtze massif. Only the Upper Permian Leping Formation and the Lower Triassic Qingtianbao Formation are exposed in Yanyuan County, Sichuan Province. The main ore-bearing rock body (No. 80) is anear-equant irregular complex stock, about 900 m long from east to west and 720 m wide from north tosouth. The bulk part consists of megaphyric biotite-quartz monzonitic porphyry. The commercial orebodylies in the No. 80 rock body and its surrounding country rocks, an N-S-elongated irregular lens-shapeddeposit. The orebody is controlled by the K-feldspar-biotite and quartz-sericite alteration zones. It consists mainly of disseminated and veinlet-disseminated ores.
