淮南煤田潘三矿岩浆岩演化特征研究  

A Study on Magmatic Lithologic Evolution Features in Panji No.3 Coalmine,Huainan Coalfield

作　　者：蒋法文[1] 刘亮[1] 陈健[2] 

机构地区：[1]淮南矿业(集团)有限责任公司地质院,安徽淮南232001 [2]安徽理工大学地球与环境学院,安徽淮南232001

出　　处：《中国煤炭地质》2014年第5期18-20,29,共4页Coal Geology of China

基　　金：国家973基础研究项目(2014CB238903);国家自然科学基金项目(41373110);淮南矿业集团科技创新项目资助

摘　　要：通过对淮南煤田潘三煤矿1煤层中的侵入岩体剖面样品的系统采集,采用X射线荧光光谱(XRF)和光学显微镜等手段,研究了岩浆岩在垂向上岩性和矿物的演化特征。结果表明:岩浆岩从剖面下部到上部,岩性由基性过渡到中性,到上部的酸性;且其矿物组成亦呈现规律性分布:在顶底部有少量蚀变产物绿泥石和热液成因后生黄铁矿;与煤层接触的岩浆岩,裂隙发育,多为热液成因黄铁矿和石英充填;岩浆岩中钾长石蚀变程度从岩床中部向顶底部逐渐增强,岩床中部长石晶形完好,顶底部长石蚀变,受岩浆热液作用影响较大。Through the systematic sampling of intrusive rock section in coal No.1, Panji No.3 coalmine, Huainan coalfield, using mea-sures of X-ray fluorescence （XRF） and optical microscopy have studied the vertical lithology and mineral evolution characteristics of magmatic rocks. The result has shown：from bottom to top, lithology of magmatic rocks transits gradually from basic to neutral finally to acidic upper part. Their mineral compositions also present regular distribution：in top and bottom parts have a few altered chlorite and hydrothermal epigenetic pyrite;magmatic rocks contact coal seams have developed fissures and many filled with hydrothermal pyrite and quartz;alteration degree of potash feldspar gradually increasing from middle part of sills to top and bottom, crystal form of feldspar in middle part is in good condition, while altered in top and bottom parts because of greater impacts from hydrothermal process.

关 键 词：岩浆岩 矿物 1煤层 潘三矿 淮南煤田 

分 类 号：P588.12[天文地球—岩石学]