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董家河铅锌矿床位于扬子地块东南缘江南造山带西段的雪峰弧型窿起区,沅辰坳陷北西段,冷家溪窿西南部,沅麻盆地的东侧。区内断裂构造发育,总体走向为北东和北北东。矿床赋存于陡山沱组下部微晶白云岩中,顶板为黑色炭质板岩,底板为南沱组冰碛砾岩。本文拟通过对董家河铅锌矿床成矿流体的研究,对其成矿流体性质及来源进行初步探讨,为湘西地区多金属矿床成矿模式的建立提供
The Dongjiahe lead-zinc deposit is located in the Xuefeng arc-shaped uplift in the western segment of the Jiangnan orogenic belt on the southeastern margin of the Yangtze block, in the northwestern part of the Yuanchen Depression, southwest of the Lengjiaxilou, and east of the Yuanma Basin. The fault structure develops in the area and the overall trend is North East and North East. The deposit is hosted in microcrystalline dolomite in the lower part of Doushantuo Formation. The roof is black carbonaceous slate and the floor is moraine conglomerate of Nantuo Formation. This paper intends to study the ore-forming fluid of Dongjiahe lead-zinc deposit and discuss the nature and origin of the ore-forming fluids for the establishment of metallogenic model for polymetallic deposits in western Hunan