辽宁省海城市老光山菱镁矿地质特征及选冶性能  

Geological features and metallurgical performance of Laoguangshan magnesite mine in Haicheng City,Liaoning Province

作　　者：王东波[1] 梁维天[1] 边广清[1] 魏征[1] 伞志强 樊金虎[1] WANG Dongbo;LIANG Weitian;BIAN Guangqing;WEI Zheng;SAN Zhiqiang;FAN Jinhu(Liaoning Fifth Geological Brigade Co.,Ltd.,Yingkou 115100,Liaoning,China;Liaoning Nonferrous Geological Exploration Institute Limited Liability Company,Shenyang 110013,Liaoning,China)

机构地区：[1]辽宁省第五地质大队有限责任公司,辽宁营口115100 [2]辽宁省有色地质勘查总院有限责任公司,辽宁沈阳110013

出　　处：《吉林地质》2024年第2期38-44,91,共8页Jilin Geology

摘　　要：老光山菱镁矿位于辽宁省海城市,菱镁矿体赋存于古元古界辽河群大石桥岩组镁质碳酸盐岩层中,属沉积变质型中粗粒至细粒晶质菱镁矿床。矿床可圈出Mg1、Mg2、Mg3三条菱镁矿矿体,Mg2矿体控制长度为800 m,平均厚度246.14 m,控制斜深为39.6~513 m,矿体平均品位MgO:45.48%、CaO:0.73%、SiO_(2):3.56%。矿石类型可分为纯菱镁矿型矿石、高硅型矿石二种类型,Mg2号矿体纯镁型矿石多分布在东部,西部基本全部为高硅型,深部纯镁型矿石含量增多。老光山菱镁矿达到最低可利用工业指标时原矿含硅7.96%,为较易选矿石。The Laoguangshan magnesite deposit is located in Haicheng City,Liaoning Province.The magnesite ore body occurs in the magnesium carbonate rock layers of the Dashiqiao Formation of the Liaohe Group in the Paleoproterozoic.It belongs to the sedimentary metamorphic type of coarse-grained to fine-grained crystalline magnesite deposit.The deposit can be divided into three magnesite ore bodies:Mg1,Mg2,and Mg3.The controlling length of the Mg2 ore body is 800m,with an average thickness of 246.14 m and a controlled slope depth of 39.6-513 m.The average grade of the ore body is MgO:45.48%,CaO:0.73%,SiO_(2):3.56%.The types of ore can be divided into two types:pure magnesite type ore and high silica type ore.The pure magnesium type ore in the Mg2 ore body is mostly distributed in the east,while the west is mostly high silica type.The content of deep pure magnesium type ore increases.When the Laoguangshan magnesite reaches the minimum usable industrial index,the original ore contains 7.96%silicon,making it a relatively easy ore dressing stone.

关 键 词：菱镁矿 地质特征 勘查方法 成矿特征 

分 类 号：P618.46[天文地球—矿床学]