摘要
西山地区已发现枞树板、南风坳、铁石垄等大、中型银铅锌矿床、矿点28处，其中热液充填型矿床最为重要。赋矿地层以震旦系浅变质碎屑岩为主，矿体严格受NE30°～60°断裂控制，多呈脉状，个别呈透镜状、扁豆状，走向长数百至千余米，倾向延深100～400 m，厚1～2 m。矿脉沿走向和倾向常出现分枝复合、膨大缩小、尖灭再现等现象。矿石品位（%）：Pb 2.84～7.83、Zn 1.88～4.50、Ag 52.33～242.21 g/t。硅化、绿泥石化、铁帽、老窿、炉渣等为直接找矿标志。圈出了3个找矿远景区，找矿潜力大。
places of large or middle scale Ag-Pb-Zn-deposits and mine spots have been found at Congshuban, Nanfeng'ao, Tieshilong etc. places in Xishan district; among them hydrothermal ore-filled styles are the most important. Ore-bearing strata mainly are superficial metamorphic clastic rocks. Mine bodies are strictly controlled by fractures of EN 30°～60°, shaped as vein, very few as lens or haricot bean, hundreds to 1,000 m long, inclined extended 100~400 m, 1～2 m thick. Divarication, joint, becoming big or small, tine extinguishments and recurrence always occur along ore-veins and trend. The ore grades are: Pb 2.84～7.83、Zn 1.88～4.50、Ag 52.33～242.21 g/t. silication, chloritation, gossan, old hollow and slag etc. are direct signs for prospecting. 3 prospecting foreground zones with big potential were enclosed.
出处
《湖南地质》
2002年第4期282-285,共4页
Hunan Geology
