石泉县羊坪湾金矿控矿地质特征及找矿方向

Geological Characteristics and Prospecting Direction of Yangpingwan Gold Deposit in Shiquan County

石泉县羊坪湾金矿位于石泉—汉阴北西西向金成矿带的西段,矿床产于下志留统梅子垭组含炭二云石英片岩中。矿区由北西向展布的脆韧性剪切带控制着2个蚀变带,矿床成因属于沉积—改造型中低温热液金矿床。在对矿床成矿地质条件及矿区地质特征综合分析研究的基础上,总结岩性、构造、蚀变等找矿标志,探索其成矿模式。试图从分析羊坪湾金矿的地质构造环境出发,对金矿的控矿因素进行研究,以探索新的找矿方向。

Shiquan County Yangpingwan gold deposit is located in the west part of the NWW-trending Shiquan-Hanyin gold metallo-genic belt, occurs in the Lower Silurian Meiziyagroup formation carbon containing two-mica-quartz schist. There are two NWW-trending alteration zones controlled by brittle-ductile shear zone in the mining area, the genesis of the deposit belongs to sedimentary transformation type epithermal gold deposit. Based on the compre-hensive analysis and research on mineralization geological charac-teristics and geological conditions of the ore, the paper summed up the prospecting criteria from lithology, structure and altera-tion, explored its metallogenic model. The paper attempts to study ore controlling factors of the gold deposits from the geological tec-tonic environment analysis of Yangpingwan gold deposit, in order to explore a new direction for ore prospecting.