辽东岫岩东胜菱镁矿矿床地质特征及开采技术条件探讨  

Geological Characteristics and Mining Conditions of the Dongsheng Magnesite Deposit in Xiuyan Area, Eastern Liaoning Province

作　　者：刘永俊 LIU Yong-jun(Liaoning Research Institute of Geology and Mineral Resources,Shenyang 110032,China)

机构地区：[1]辽宁省地质矿产研究院

出　　处：《中国非金属矿工业导刊》2019年第4期25-27,共3页China Non-Metallic Minerals industry

基　　金：中国地质调查局辽东吉南成矿带永吉—凤城地区地质矿产调查项目(编号：DD20160049);辽宁省岫岩县偏岭镇东胜村菱镁矿资源储量核实项目(编号：2014-1)

摘　　要：东胜菱镁矿床位于海城—大石桥菱镁矿成矿带上,矿体赋存于古元古代辽河群大石桥组三段含菱镁矿白云大理岩中,矿体呈似层状、透镜状产出,倾向145~172°,倾角66~80°,矿体厚7.65~42.10m,矿石平均品位MgO 45.65%,CaO 1.18%,SiO21.73%,自然品级以Ⅲ级品为主,成因类型属于沉积变质后期热液叠加改造层控矿床。矿床开采工程地质条件中等,水文和环境地质条件简单,属于以工程地质问题为主的开采技术条件中等矿床。Dongsheng magnesite deposit locates in the Haicheng and Dashiqiao metallogenic belt,this deposit occurs in the third dolomite segment of Dashiqiao formation in Liaohe group.The orebodies are layered and lentoid,tendency of 145~172°,inclination of 66~80°and thickness of 7.65~42.10m.The average grade is MgO 45.65%,CaO 1.18% and SiO21.73%.As the same time,the natural grade is majorly three.The genetic type belongs to sedimentary metamorphic stratified deposit,which suffers hydrothermal modification later.The engineering geological condition is medium,hydrological and environmental geological conditions are simple,it belongs to the mining technology condition medium deposit.

关 键 词：地质特征 矿床成因 开采技术条件 东胜菱镁矿床 

分 类 号：P619.237[天文地球—矿床学]