综合物化探方法在青海珊旗根玛金锑矿点的运用

通过对青海多尔娘地区进行1∶5万水系沉积物测量,圈定了化探综合异常HS-18,在综合分析的基础上,对优选出的找矿靶区进行了验证。研究区1∶1万土壤剖面显示有AP~1、AP~2两个SbAuAs综合异常,激电中梯剖面显示有中部和北部高视极化率区,经槽探工程揭露,为矿致异常,新发现隐伏的珊旗根玛金、锑矿点,取得了较好的找矿效果。研究区金锑矿成矿类型属构造热液型,找矿目标由大到小依次为:三叠系上统清水河组黑色板岩-断层破碎带-花岗斑岩岩脉-硅化-褐铁矿化、辉锑矿化,可为本地区寻找同类型矿床提供找矿标志和参考。

Application of comprehensive geophysical and geochemical prospecting method in Shanqigenma Au-Sb deposit, Qinghai Province

Comprehensive geochemical anomaly HS-18 was delineated by 1:50000 stream sediments in Duerniang area of Qinghai Province. Basised on comprehensive analysis, the optimized prospecting target area was verified. 1:10 000 soil profile in the study area shows two SbAuAs comprehensive anomalies AP1 ,AP2.IP middle-elevator profile shows high apparent polarizability areas in the central and Northern regions. The trough exploration project reveals that these anomalies are mineral-induced anomalies. The concealed Shanqigenma gold and antimony deposits have been newly discovered, and good prospecting results have been achieved. The metallogenic types of Au,Sb deposits in the study area belong to tectonic hydrothermal type. Prospecting targets are as follows: black slate-fault fracture zone-granite porphyry vein- silicification-limonization and antimony mineralization in the Qingshuihe Formation of the Upper Triassic.It can provide prospecting criteria and reference for searching for similar deposits.