摘要
徐家湾-李家营石墨矿位于秦岭造山带东段南支,木家垭-内乡断裂与淅川断裂之间的小陡岭-老灌河石墨成矿带的东端。通过预查工作,在矿区内古元古界大沟岩组中圈定出10个石墨矿体,矿体呈层状且大致平行,产状与地层一致,沿走向和倾向局部有分枝复合现象,矿床规模大型。矿石的自然类型为石墨斜长片麻岩型和石墨石英片岩型,工业类型为需选矿细鳞片晶质石墨矿。矿床成因类型为沉积变质矿床,并具有后期构造、混合岩化和岩浆热液叠加富集特征。
The Xujiawan-lijiaying graphite deposit is located in the southem border of eastem block of the Qinling orogenic belt, between Mujiaya-Neixiang fault and Xichuan fault, and it lies in the eastern end of the Xiaodouling-Laoguanhe graphite metallogenic belt. Through reconnaissance geological work, we found the deposit is with a large scale. It is delineated 10 graphite ore bodies in Paleoproterozoic Dagou group.The ore bodies are layered and roughly parallel with the strata, and appear branching along the trend and tendency. The ore natural type is graphite plagiogneiss and graphite schist, and its industrial type is beneficiation for fine flake graphite ore. The genetic type of the deposit is sedimentary metamorphic, and it is characteristic of the subsequent structure, migmatization and magmatic-hydrothermal superimposed enrichment.
出处
《地质调查与研究》
2017年第1期41-47,共7页
Geological Survey and Research
基金
河南省地质勘查基金项目"河南省淅川县徐家湾-李家营一带石墨矿预查(豫国土资发〔2015〕96号)"
关键词
石墨矿
地质特征
成因
徐家湾-李家营
graphite deposit
geological characteristic
origin
Xujiawan-lijiaying
