淮北卧龙湖煤矿岩-煤蚀变带矿物变化特征

发布时间：2018-05-17 20:32

本文选题：卧龙湖煤矿 + 岩浆侵入　；参考：《矿物岩石地球化学通报》2017年03期

【摘要】：为探讨岩-煤蚀变过程中矿物变化特征,通过工业分析、LTA-XRD等技术手段测试了淮北卧龙湖煤矿8煤层岩浆侵入体、岩-煤蚀变带及蚀变煤中灰分、挥发分、水分、各形态硫及矿物质含量。结果表明,岩浆侵入导致煤中灰分升高,黄铁矿硫增加,有机硫减少;研究区煤中主要矿物成分为石英(8.3%)、黄铁矿(0.1%)、伊利石(60.9%)、高岭石(20.2%)、方解石(3.6%)、菱铁矿(0.2%)和铁白云石(6.9%);石英、铁白云石及黄铁矿含量由侵入体→蚀变煤→未蚀变煤逐渐降低;蚀变煤中黄铁矿、石英及碳酸盐矿物主要来源于岩浆热液。岩浆热液对煤层的蚀变,导致煤质及煤中矿物种类、含量及赋存状态发生了显著变化,部分矿物在热液作用下蚀变形成新矿物。
[Abstract]:In order to study the characteristics of mineral change in the process of rock-coal alteration, the magmatic intrusion, rock-coal alteration zone and the ash, volatile and moisture in the 8 coal seam of Wolong Lake Coal Mine in Huaibei were measured by means of industrial analysis and LTA-XRD. Sulfur and mineral contents in various forms. The results showed that the ash content in coal increased, pyrite sulfur increased and organic sulfur decreased due to magmatic intrusion. The main mineral components of coal in the study area were quartz 8.3g, pyrite 0.1, Illite 60.9, kaolinite 20.20.20. 2X, calcite 3.6m, siderite 0.20.22) and iron dolomite 6.9m. The contents of ferrite dolomite and pyrite decrease gradually from the intrusive altered coal and the pyrite quartz and carbonate minerals in the altered coal are mainly derived from magmatic hydrothermal solution. The alteration of coal seam by magmatic hydrothermal solution has resulted in significant changes in the types, contents and occurrence of minerals in coal and some minerals have been altered into new minerals under the action of hydrothermal solution.
【作者单位】：安徽大学资源与环境工程学院矿山环境修复与湿地生态安全协同创新中心;Water
【基金】：国家自然科学基金项目(41373108)
【分类号】：P618.11

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