陕西省商州区罗河石墨矿地质特征及成因浅析

Geological Characteristics and Genesis of Luohe Crystal Graphite Deposit in Shangzhou County, Shaanxi Province

罗河石墨矿是陕西省太白—商南石墨成矿带上新发现的一个大鳞片石墨矿。石墨矿赋存于古元古界秦岭群雁岭沟组黑云斜长片麻岩、石墨大理岩中,矿床类型为区域变质型,与全国主要的晶质石墨矿床类型和成矿时代一致。对罗河石墨矿的地质特征全面分析,总结其矿床成因,对于在秦岭地区寻找同类矿床具有指导意义。

Luohe graphite deposit is a newly discovered large scale graphite deposit in Taibai-shangnan graphite metallogenic beltof Shaanxi province. Graphite deposit occur in the dark cloud gneiss and graphite marble of the Yanlinggou formation of the Qinlinggroup in the paleoproterozoic. The type of deposit is of regional metamorphic type, which is consistent with the major types ofcrystalline graphite deposit in the country and the age of mineralization. An overall analysis of the geological characteristics of theLuohe graphite deposit and a summary of its genesis are of guiding significance for finding similar deposit in the Qinling region.