青海握玛沟金铜矿床地质特征及找矿标志

握玛沟金铜矿床位于东昆仑成矿带东段鄂拉山地区，矿体产于下中三叠统隆务河组地层中，严格受近东西向、北东向断裂构造控制，呈似层状、透镜状产出.目前区内已发现金矿（化）体2条，铜矿（化）体10条.矿床类型以中低温岩浆热液型和构造蚀变岩型为主.在分析矿床地质特征，总结区内地球物理、地球化学特征的基础上，认为Ag与Au、Cu具有较好的相关性，成矿潜力较大，今后工作中应加强相关银矿的找矿工作.进一步分析表明，隆务河组砂板岩为区内主要矿源层，由近东西向断裂派生的次级层间裂隙为矿体富集的有利部位，Au、Cu土壤异常，条带状、串珠状低缓磁异常以及低阻高极化激电异常是寻找金铜矿的重要找矿标志.

GEOLOGICAL CHARACTERISTICS AND PROSPECTING INDICATORS OF WOMAGOU GOLD-COPPER DEPOSIT IN QINGHAI PROVINCE

The Womagou gold-copper deposit, located in the Ela Mountain area of eastern Kunlun metallogenic belt, is occurred in the Early-Middle Triassic Longwuhe Formation as stratoid and lentoid structures, strictly controlled by the E-W-and NE-trending faults. Currently, two gold and ten copper ore/mineralized bodies were found, with deposits dominated by the epi-mesothermal magmatic and structural altered rock types. Based on the analysis of geological, geophysical and geochemical characteristics, it is thought that Ag is well correlated with Au and Cu, and has a great metallogenic potential, thus more attention should be paid in future prospecting. Further analysis shows that the sand slate of Longwuhe Formation serves as the main source bed in the area. The secondary interlayer fissures derived from the E-W fault provide favorable positions for the enrichment of orebodies. The soil anomalies of Au and Cu, banded and beaded low-gentle magnetic anomalies and IP anomalies with low resistance and high polarization are important prospecting indicators for gold-copper deposits.