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CHARACTERISTIC OF GOLD ORE AND MINERALS IN THE LIUPIYEGOU GOLD DEPOSIT, JILIN PROVINCE

Jianjun Jiang

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Abstract

The gold ores in the Liupiyegou deposit, Jilin province is a lower sulfide type. Metal minerals are mainly pyrite, and less sphalerite, galena, and chalcopyrite. The gangue minerals are mainly quartz, chlorite, feldspar, and sericite. The useful elements are Au and Ag with Au/Ag of 0.37. The content of harmful impurity such as As, Sb, and C is lower. The ores are always crystalloid, crushed, metasomatic frame, and disseminated, brecciated, veinlet-netted structure. The electrum and silver-bearing nature gold are the principal gold minerals. Shapes of gold minerals are mostly irregular, sharp-angled grain, and granular with middle to fine granule. Gold minerals among grains are principal in the enchasing status, the others exist in enclosure and fracture. Natural gold minerals with quality of 769.4‰ have little impurity of Fe, Ni, Co, Cu, S, except higher Ag, and belong to the gold-silver mineral type of the natural elements.

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The gold ores in the Liupiyegou deposit, Jilin province is a lower sulfide type. Metal minerals are mainly pyrite, and less sphalerite, galena, and chalcopyrite. The gangue minerals are mainly quartz, chlorite, feldspar, and sericite. The useful elements are Au and Ag with Au/Ag of 0.37. The content of harmful impurity such as As, Sb, and C is lower. The ores are always crystalloid, crushed, metasomatic frame, and disseminated, brecciated, veinlet-netted structure. The electrum and silver-bearing nature gold are the principal gold minerals. Shapes of gold minerals are mostly irregular, sharp-angled grain, and granular with middle to fine granule. Gold minerals among grains are principal in the enchasing status, the others exist in enclosure and fracture. Natural gold minerals with quality of 769.4‰ have little impurity of Fe, Ni, Co, Cu, S, except higher Ag, and belong to the gold-silver mineral type of the natural elements.

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Available abstract

The gold ores in the Liupiyegou deposit, Jilin province is a lower sulfide type. Metal minerals are mainly pyrite, and less sphalerite, galena, and chalcopyrite. The gangue minerals are mainly quartz, chlorite, feldspar, and sericite. The useful elements are Au and Ag with Au/Ag of 0.37. The content of harmful impurity such as As, Sb, and C is lower. The ores are always crystalloid, crushed, metasomatic frame, and disseminated, brecciated, veinlet-netted structure. The electrum and silver-bearing nature gold are the principal gold minerals. Shapes of gold minerals are mostly irregular, sharp-angled grain, and granular with middle to fine granule. Gold minerals among grains are principal in the enchasing status, the others exist in enclosure and fracture. Natural gold minerals with quality of 769.4‰ have little impurity of Fe, Ni, Co, Cu, S, except higher Ag, and belong to the gold-silver mineral type of the natural elements.

Key concepts: Pyrite, Sphalerite, Gangue, Galena, Geology, Sericite, Chalcopyrite, Sulfide minerals

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