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马曲砂金矿位于西藏东部昌都地区 ,地处著名的三江成矿区 ,阿尔卑斯 -喜马拉雅巨型造山带东段弧形转弯处。根据砂金矿床的地质特征 ,重砂矿物组合以及主要重砂矿物特征 ,认为该矿床是近源型砂金矿 ,其形成与位于砂金矿南的各贡弄斑岩型铜金矿床有关。砂金聚集于河漫滩地貌单元含泥砂砾层的下部 ,砂金矿体的大小、品位和稳定性明显受河谷河漫滩形状的控制。
Maqu Sha Gold Mine is located in the eastern part of Qamdo, Tibet, is located in the famous Sanjiang metallogenic area, the Alps - Himalayan giant orogenic arc east bend. According to the geologic characteristics of the gold-gold deposits, the composition of the heavy-sand minerals and the characteristics of the major heavy-grained minerals, the deposit is considered to be a near-source type of gold-gold mine, and its formation is related to the Gong Gongyun porphyry copper-gold deposit located south of the gold-gold mine. Placer gold accumulates in the lower portion of muddy gravel layer in the floodplain geomorphic unit. The size, grade and stability of the placer gold ore body are obviously controlled by the floodplain shape of the river valley.