吉林省集安市马蹄沟晶质石墨矿地质特征及找矿标志

Geological features and prospecting indicators ofMatigou crystalline graphite deposit in Ji an City,Jilin Province

吉林省集安市马蹄沟晶质石墨矿位于吉林省集安市财源乡马蹄沟一带,文章对该矿床地层、构造、岩浆岩等地质特征及矿床成因进行研究,认为赋存于古元古界集安群荒岔沟组的晶质石墨与硼铁建造、含磷透辉石建造、铀-稀土建造等相应矿床均属于海底火山喷发沉积变质、岩浆热液作用的层控矿床,马蹄沟晶质石墨矿成因类型为沉积变质型晶质石墨矿床。总结该地区晶质石墨矿的找矿标志。

The Matigou crystalline graphite deposit in Ji an City,Jilin Province is located in the area of Matigou,Caiyuan Township,Ji an City,Jilin Province.In this paper,the authors studied the geological characteristics and genesis of the deposit such as strata,structure,magmatic rock and so on.It is believed that the corresponding deposits,such as crystalline graphite,boron iron formation,phosphorous diopside formation and uranium rare earth formation,which occur in the Huangchagou Formation of the Lower Proterozoic Ji an Group,belong to stratabound deposits of submarine volcanic eruption,sedimentary metamorphism and magmatic hydrothermal process.The genetic type of Matigou deposit is sedimentary metamorphic crystal graphite deposit.The prospecting criteria of crystalline graphite ore in this area are summarized.