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2002•Geology and ProspectingRequires access

ORE FEATURES AND GOLD OCCURRENCE OF THE DAPINGGOU GOLD DEPOSIT, XINJIANG, NORTHWEST CHINA

LI Xuezhi

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Abstract

Dapinggou gold deposit is a medium-temperature dynamic metamorphic hydrothermal type deposit controlled by ductile shear zones. It is characterized mainly as altered mylonite type and with partly K-feldspar-quartz vein type. Ore textures are mainly blastic and metasomatic- infilling crystallization. Ore structures are mainly block, crumb, veinlet and disseminated. Gold in the ores appears as independent gold minerals like native gold, occurring in the major gold-carrying minerals like pyrite, chalcopyrite, quartz, K-feldspar and calcite at the state of inter-granular, interlocking, crevice and enclosure. With different shape, the gold minerals are commonly medium-fine grain size. The characteristics of the gold mineral are similar to those deposits in the metamorphic rocks of Archean greenstone belt in the eastern China.

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Dapinggou gold deposit is a medium-temperature dynamic metamorphic hydrothermal type deposit controlled by ductile shear zones. It is characterized mainly as altered mylonite type and with partly K-feldspar-quartz vein type. Ore textures are mainly blastic and metasomatic- infilling crystallization. Ore structures are mainly block, crumb, veinlet and disseminated. Gold in the ores appears as independent gold minerals like native gold, occurring in the major gold-carrying minerals like pyrite, chalcopyrite, quartz, K-feldspar and calcite at the state of inter-granular, interlocking, crevice and enclosure. With different shape, the gold minerals are commonly medium-fine grain size. The characteristics of the gold mineral are similar to those deposits in the metamorphic rocks of Archean greenstone belt in the eastern China.

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Available abstract

Dapinggou gold deposit is a medium-temperature dynamic metamorphic hydrothermal type deposit controlled by ductile shear zones. It is characterized mainly as altered mylonite type and with partly K-feldspar-quartz vein type. Ore textures are mainly blastic and metasomatic- infilling crystallization. Ore structures are mainly block, crumb, veinlet and disseminated. Gold in the ores appears as independent gold minerals like native gold, occurring in the major gold-carrying minerals like pyrite, chalcopyrite, quartz, K-feldspar and calcite at the state of inter-granular, interlocking, crevice and enclosure. With different shape, the gold minerals are commonly medium-fine grain size. The characteristics of the gold mineral are similar to those deposits in the metamorphic rocks of Archean greenstone belt in the eastern China.

Key concepts: Geology, Mylonite, Pyrite, Geochemistry, Archean, Metamorphic rock, Greenstone belt, Quartz

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ORE FEATURES AND GOLD OCCURRENCE OF THE DAPINGGOU GOLD DEPOSIT, XINJIANG, NORTHWEST CHINA — Research Paper | ScholarLens