湘中锡矿山锑矿控矿特征与成矿预测

Ore-controlling characteristics and metallogenic prediction of Hsikuangshan Sb deposits in central Hunan

湘中锡矿山锑矿田可以概括为三大成矿中心即飞水岩成矿中心、老矿山成矿中心、童家院成矿中心,这三大成矿中心具有基本等距性分布的规律。陈家冲背斜—稻草湾背斜区域很可能是锡矿山锑矿田的第四大成矿中心,其储量规模可能达中大型规模。锡矿山锑矿田的地质找矿要紧紧抓住导矿(控矿)断裂即F75、F72、F71、F3、F219等开展工作,特别要寻找断层下盘既存在页岩屏蔽层,又存在构造张性空间的区域,这往往就是非常有潜力的找矿靶区。

Hsikuangshan Sb ore field in central Hunan generally includes three important mineralization cen-ters,namely Feishuiyan mineralization center,Laokuangshan mineralization center and Tongjiayuan mineral-ization center.The three mineralization centers are distributed with fundamental equidistant regularity. Chenjiachong anticline-Daocaowan anticline area is possibly the fourth mineralization center in Hsikuang-shan Sb ore field because of its large-scale reserves.The prospecting works in Hsikuang shan Sb ore field shall focus on the ore-transmitting (ore-controlling)fracture,namely F7 5 ,F72 ,F7 1 ,F3 and F2 1 9 .In particu-lar,parts of the fault footwall in which both shale shielding layer and tectonic extensional space exist shall be paid more attention to as greatly promising prospecting targets.