摘要
通过勘查和室内实验测试,本文分析了研究区古元古界湾牛坝岩组(Pt1w)中3条晶质石墨矿带(SM1、SM2和SM3)的赋存特征、矿石的矿物组成及其显微岩石学特征,统计了矿石品位、矿层厚度及石墨晶体粒径结构。本文认为矿体呈层状发育,含矿母岩主要为石墨黑云钾(斜)长片麻岩、含石墨石英片岩,以鳞片变晶结构和粒状变晶结构、片状构造和片麻状构造为主,石墨片晶粒径集中分布在0.1 mm^0.355 mm之间,占51.04%,3层石墨矿体的固定碳含量较高,厚度较大,研究区石墨矿具有较好的开发潜力。
Through exploration and laboratory test, the occurrence characteristics, mineral composition and micropetrological characteristics of the three crystalline graphite ore belts (SM1, SM2 and SM3) in the Paleoproterozoic Wanniuba formation (Pt1w) in the study area were analyzed. The ore grade, thickness and particle size structure of the graphite crystal were calculated. It is considered that the ore body is layered and the ore bearing parent rocks are mainly graphite biotite potassium feldspar gneiss, graphite biotite plagioclase gneiss and graphite bearing quartz schist. They are mainly composed of scaly and grainy crystalloblastic structure, flaky structure and gneissic structure. The grain size of the graphite flake is concentrated between 0.1 mm^0.355 mm, accounting for 51.04%. The three-layer graphite ore bodies have a high level of fixed carbon content and large thickness. The graphite ore in the study area has great potential of development.
出处
《矿山工程》
2020年第2期76-83,共8页
Mine Engineering
