在北祁连西段甘肃境内金矿找矿取得了巨大成果,但在青海境内,该成矿带上金矿找矿遇到了瓶颈.文章以青海境内已有的典型金矿陇孔、黑刺沟金矿床为基础,结合以往区内金矿研究成果.认为金矿体主要产于下奥陶统阴沟群火山岩组,受区域断裂及次级断裂控制明显,蛇绿混杂岩带内基性—超基性岩浆活动为金矿的富集提供了条件,韧性剪切带是主要的容矿构造.通过对研究区成矿地质条件及地球化学背景初步分析,提出了该区找矿方向.

Qunli Iron Mine is in the mixed petrified gneiss interbedded with marble and skarn strata of the Lower Rock Formation of the Jinshuikou Group formed in the Lower Proterozoic, and it belongs to a skarn deposit related to migmatization. The regional tectonic structure is located in the central and western sections of the Qimantag-Dulan orogenic belt. The metallogenic belt belongs to the Qimantag-Dulan Hualixi iron, cobalt, bismuth, lead, zinc, copper and silver metallogenic belt. The area has experienced many complicated and strong tectonic movements, and the structural traces of different scales and mechanical properties are well developed. In particular, the northwest-westward compressive and torsional faults constitute the main structural framework in the region, which plays an important role in controlling the distribution of strata, magmatic rocks, metamorphism and mineral resources in various periods.

北祁连西段陇孔—热水达坂地区金矿床(点)产于下奥陶统阴沟群火山岩组与基性、超基性岩组成的蛇绿混杂岩带内.矿体赋存于北西(北西西)向构造破碎带内,近矿围岩为阴沟群火山岩组凝灰岩、玄武岩,含矿岩性为构造角砾岩,围岩蚀变主要有黄铁矿化、碳酸盐化、硅化,矿床成因类型为中低温热液型.通过对陇孔、黑刺沟2个典型金矿床进行分析,并对控矿因素、找矿标志进行总结,认为在蛇绿混杂岩带内存在与典型金矿床地质背景相似的地段,在这些地段内圈出了1:5万水系沉积物综合异常10处,并对部分综合异常进行了检查,圈出了土壤综合异常26处及多条含矿构造蚀变带,表明研究区具有良好的找矿前景.