河南九槽沟矿区晶质石墨矿地质特征及成矿条件分析

Geological characteristics and metallogenic conditions of graphite deposits in Jiucaogou mining area,Henan Province

河南九槽沟矿区位于华北板块构造带与扬子板块构造带结合部河南淅川-陕西商南石墨成矿带上,通过地质工程、测试、资料收集、综合研究等认为主要含矿层赋存于古元古界陡岭群大沟岩组片岩、片麻岩地层中,矿体规模中-大型,不同期次、不同性质的岩浆岩十分发育,物理特征明显,显示出良好的找矿空间。预测在该区域成矿带上有大型晶质石墨矿床存在。

The main purpose of this paper is to understand the metallogenic conditions of the graphite ore in jiugougou mining area,and to provide the basis for further prospecting in this area.Based on geological engineering,testing,data collection and comprehensive research,it is considered that the geotectonic location of this area is located on the graphite metallogenic belt between Xichuan,Henan Province and Shangnan,Shaanxi Province,the junction of North China plate tectonic belt and Yangtze plate tectonic belt,and the main ore bearing bed is located in the schist and gneiss strata of dagouyan formation,Douling group,Paleoproterozoic,with medium to large ore body scale,different stages and different characteristics The magmatic rocks are very well developed with obvious physical characteristics,showing a good prospecting space.It is expected that there are large crystalline graphite deposits in the metallogenic belt of this region.