安康北部茨沟--早阳地区金矿化探异常特征及找矿前景分析

GEOCHEMISTRY AND ORE PROSPECTING OF GOLD MINERALIZATION IN CIGOU-ZAOYANG AREA OF THE NORTHERN ANKANG DISTRICT IN SHAANXI PROVINCE

通过大比例尺土壤测量对已发现的金异常进行查证,初步圈定AuⅠ-1、AuⅡ-2等金矿体。化探异常多以以金为主的多元素化探异常分布,洞河组地层为成矿最为有利地段,黑云母石英片岩为区内金的原始矿源层。地层内层间次级韧性剪切带和脆性断裂发育,为成矿热液的活化、运移、富集成矿提供了必要通道和储矿场所。

Verification of discovered gold anomalies found by large scale soil measurements has delineated gold orebodies AuⅠ-1 and AuⅡ-2.The geochemical anomalies mainly consist of gold and multi-element geochemical anomalies and the Donghe Formation is the most favorable for mineralization,in which the biotite quartz schist is the original source bed of gold in this area.The development of secondary ductile shear zone and brittle fracture in the inner layers provided the necessary channel and storage places for the activation,migration and enrichment of ore-forming hydrothermal solution.