云南富宁水合口金矿区土壤地球化学特征及成矿预测

Soil geochemistry characteristics and metallogenic prognosis in Shuihekou,Funing City,Yunnan Province

富宁水合口金矿区位于中国著名的滇黔桂"金三角"地区,属文山—富宁成矿带,目前在该成矿带中的泥盆系、奥陶系地层中发现或探明多处卡林型金矿床。在详细查明研究区地质特征的基础上,在水合口金矿区寒武系地层中采用1∶1万土壤地球化学测量,圈定以Au为主的土壤地球化学异常3处,并结合少量工程验证,在矿区范围内进行了成矿预测。综合分析认为,该区具备良好的成矿的潜力,断裂构造、地球化学异常和不纯的碳酸盐岩的空间叠加部位,是金矿成矿的有利部位。

Shuihekou gold district is located in Wenshan-Funing metallogenic belt,within the famous ＂Golden Triangle Yunnan-Guizhou-Guangxi＂where many Carlin-type gold deposits have been discovered in Ordovician and Devonian strata.Based on thorough investigations of the geological characteristics in local area,1∶10 000 soil geochem-ical survey is used in Cambrian strata in Shuihekou gold district,three Au-dominant anomalies are delineated,and with some engineering verification,the prospecting potentials are evaluated.Finally,it is taken that the spatial overlap of soil geochemical anomalies and impure carbonatite and fault structures is the favorable mineralization point.