云南省元江县大班壁矿区成矿地质特征及找矿方向

Metallogenic Geological Characteristics and Prospecting Direction of the Dabanbi Mining Area, Yuanjiang County, Yunnan Province

大班壁矿区地处哀牢山山脉的中南段,位于云南省元江县城西南方,与墨江县界毗邻,区域上处于唐古拉—昌都—兰坪—思茅褶皱系南部之墨江—绿春褶皱带内。该褶皱带范围受墨江断裂带与哀牢山断裂带所限定,呈北西向之帚状。大班壁矿区内已有探明的硅酸镍风化壳型矿床,本文通过分析矿区地质背景及成矿地质条件,并将其与金厂岩体东西接触带成型的热液型金、镍、铜矿床进行类比,认为矿区具有寻找热液型硫化镍多金属矿床的潜力。

The Dabanbi mining area is located in the south-central part of the Ailao Mountain Range, located in the southwest of Yuanjiang County, Yunnan Province, adjacent to the Mojiang County boundary. It is located in the Mojiang-Green Spring fold belt in the south of the Tanggula-Changdu-Lanping-Sioma fold system. The fold zone is limited by the Mojiang fault zone and the Ailaoshan fault zone, and is northwestward. There are proven nickel silicate weathering crust deposits in the Dabanbi mining area.This paper analyzes the geological background and metallogenic geological conditions of the mining area and compares it with the hydrothermal gold, nickel and copper deposits formed by the east-west contact zone of the Jinchang rock mass. It believes that the mine has the potential to find hydrothermal nickel-sulphide polymetallic deposits.