新疆苏吉泉石墨矿床地质特征及其成因  

GEOLOGY AND GENESIS OF THE SUJIQUAN GRAPHITE DEPOSIT,XINJIANG PROVINCE

作　　者：严正富[1] 杨浩[1] 顾连兴[1] 郭继春[1] 

机构地区：[1]南京大学地球科学系

出　　处：《江苏地质》1990年第3期21-24,共4页Jiangsu Geology

摘　　要：本文明确提出苏吉泉石墨矿的形成机制是由前石炭系地层经花岗岩浆同化—混染作用而成,其中石墨碳来自地层中的有机炭,并在花岗岩浆的封闭系统中,碳氢气体发生剧烈旋转作用,造成系统内部物质的塑性滚动,凝聚成球状构造的石墨矿。Graphite ores of the Sujiquan deposit in the Xinjiang province are hosted by contaminated gr- anitic rocks which constitute a zone extending northwestard within the sareshike batholith of biot- iteg-granite. A distinctive feature of this deposit is the spheroidal structure of graphite ore.Isotope data indicate that ore-forming element,carbon,came from the assimilated pre-Carboniferousse sequence. Hydrocarbon gases derived from sedimentary carbon might have made crystallization centers for carbon revolve in the closed magma system at high temperature and pressures,and made carbon coagulate into graphite spheroids. As the results of the research,the author also concluded that the host rock in the deposit is contaminated granite;the contaminated granite was formed through assimilation-contaminationand anatexis-transformation of the Precarbonniferous strata by biotite granitic magma;the isotopic research indicates that the carbon,ore4orming element,is come from sedimentary strata.

关 键 词：石墨矿 矿床 地质特征 成因 

分 类 号：P619.252[天文地球—矿床学]