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新疆苏吉泉球状石墨矿床成矿模式

         

摘要

东准噶尔苏吉泉石墨矿赋存于黄羊山复式花岗岩体的黑云母碱长花岗岩和角闪碱长花岗岩接触带,构成NW向延伸的长英质石墨混染带.矿体多呈不规则透镜状,平面上为短轴或近似等轴状,主矿体附近发育有巢状或小透镜状矿体矿石多具球状构造,石墨球体间为石英和长石组成的致密长英质胶结物,球体除石墨外还有含量不等的粗粒自形长石、石英和云母等利用X射线粉晶衍射技术、DTA分析及显微镜下观察,对该矿床特征进行研究并与国内其他石墨矿床进行地质学、矿物学研究对比,发现其晶胞参数和晶胞体积最小,放热峰起始温度最高及有序度最好结合前人δ13C同位素分析结果,认为成矿物质为有机碳,矿床属岩浆成因.%Xinjiang Zhungeer East Su Jiquan graphite deposit occurrence in the Mongolian Gazelle Hill penthouse of biotite granite base of granite and amphibolite long granite base of the contact zone, constitutes an extension of the North West to felsic with mixed with graphite,Lenticular ore body was irregular in the plane for the short axis-like or similar equiaxed, often in the main ore body near the small number of nested or small lenticular ore body.Ore more than a spherical structure, between the graphite balls of quartz and feldspar component of the compact felsic cement,in addition to graphite sphere, there are content ranging from coarse-feldspar, quartz and mica and so on.Using X-ray diffraction technique,DTA analysis,and observing under a microscope features and so on for contrasting Su Jiquan graphite deposit and other domestic graphite deposits by a system of geology, mineralogy comparative considers,the graphite of Su Jiquan graphite deposit has the smallest cell parameters and the cell volume, exothermic peak initial temperature and the highest degree of order best. With their predecessors <5I3C isotope analysis, a mineral that is organic carbon.The deposit belonged to magmatic origin,not metamorphosed origin.

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