柴西北缘黄矿山一带晶质石墨矿地质特征及成因分析

Geological characteristics and genesis of crystalline graphite ores of Huangkuangshan area in northwestern of Qaidam Basin

为了探讨柴西北缘黄矿山一带晶质石墨矿的地质特征及成因,文中对黄矿山一带石墨矿床的矿床地质特征及成矿环境进行了综合分析,并对黄矿山一带石墨矿床从成矿地质条件以及成矿模式上进行了归纳总结。黄矿山一带石墨矿床产于下元古界达肯达坂群,大理岩和石英片岩为含矿岩性,经过区域变质作用以及动力变质及接触变质作用的叠加,最后形成晶质石墨矿石。综合分析认为黄矿山一带石墨矿床的成因类型为区域变质型,已发现的矿体规模大,走向延伸稳定,显示出较好的石墨矿找矿前景。

In order to discuss the geological characteristics and genesis of crystalline graphite of Huangkuangshan area at northwestern of Qaidam Basin, the geological characteristics and metallogenic environment of the graphite ore deposit in Huangkuangshan area were comprehensively analyzed, and the metallogenic geological conditions and metallogenic modes of the graphite deposit in the area were summarized. The graphite deposit in the Huangkuangshan area evolved from Ken Daban Group of the Paleoproterozoic and marble and quartz schist are ore -bearing lithology. The crystalline graphite ore was formed by the metamorphism and contact metamorphism. Based on the comprehensive analysis, it is concluded that the genesis type of graphite deposit in Huangkuangshan area is regional metamorphism. The discovered ore body is large in scale and tends to extend and stabilize, which shows a good prospect of graphite ore prospecting.