陕西箱子寨-铜钱峡地区志留系金矿土壤地球化学特征及找矿标志

Soil Geochemistry Feature And Prospecting Indicator of Silurian System Gold Deposit in Xiangzizhai-Tongqianxia Region of Shaanxi

箱子寨-铜钱峡金矿区位于扬子地台北缘巴山弧形断裂东侧,近年来西北有色地质勘查局在该区开展了志留系金矿整装勘查工作,在该金矿带上通过1:1万土壤地球化学测量工作发现了三岔沟、奋家沟、箱子寨、铜钱峡等多处金矿点。文章以该区成矿地质特征为主题,指出了成矿地质、土壤地球化学特征。通过对化探异常特征的研究,得出Au与As元素有一定的共生组合与成生联系。并根据化探异常与成矿的关系,建立了该地区金矿的找矿标志。对进一步利用化探数据指导找矿,以及提高金矿普查效果有一定的积极意义。

TheXiangzizhai-Tongqianxia gold mineralization field is located in the East side of the Bashan arc fault in the north rim of the Yangzi platform. In recent years, integrated exploration of gold deposits of Silurian was carried out in this region, and gold deposit fields of Sanchagou, Fenjiagou, Xiangzigou and Tongqiangou were found on the gold belt by 1 ： 10, 000 soil geochemical survey. Metallogenic geological characteristics and soil geochemical characteristics in the area was pointed eut. Through the study of geochemical anomaly characteristics, certain paragenetic association and genetic relation between Au and As were obtained. And according to the relation of geochemical anomalies and mineralization, prospecting indicator of the gold deposits in the area was established for further utilization of geochemical data for prospecting guidance, as well as improvement of the gold survey.