含金磷酸盐矿物的发现及其地质意义-以山东牟平腊子沟金矿为例  

Discovery of Gold-Bearing Phosphate Minerals and Its Geological Significance:An Example of the Lazigou Gold Deposit in Muping,Shandong Province

作　　者：王亚飞 尹青青[2] 王铁军 韩建栢[3] 刘劭航 杨嘉霖 纪旭波 蹇黎明 WANG Yafei;YIN Qingqing;WANG Tiejun;HAN Jianbai;LIU Shaohang;YANG Jialin;JI Xubo;JIAN Liming(China Coal Hydrogeological Bureau Group Engineering Technology Academy Co.,Ltd.,Tianjin 300121;Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu,Sichuan 611756;Sinosteel Tianjin Geological Academy Co.,Ltd.,Tianjin 300181;Shandong Humon Smelting Co.,Ltd.,Yantai,Shandong264100)

机构地区：[1]中煤水文局集团(天津)工程技术研究院有限公司,天津300121 [2]西南交通大学地球科学与环境工程学院,四川成都611756 [3]中钢集团天津地质研究院有限公司,天津300181 [4]山东恒邦冶炼股份有限责任公司,山东烟台264100

出　　处：《地质与勘探》2022年第6期1170-1178,共9页Geology and Exploration

摘　　要：山东牟平腊子沟金矿位于华北板块苏鲁造山带胶南-威海隆起区,牟平-乳山金矿成矿带中段,区内岩浆活动频繁,构造活动强烈,成矿地质条件优越。本文通过镜下显微结构观察、电子探针测试分析对腊子沟金矿载金矿物的组成、成分及金的赋存状态进行了研究,首次在该矿区发现含金独居石和含金磷灰石,金含量达到0.283%~0.456%,推测金可能通过类质同象形式替代磷灰石中的Ca^(2+)或独居石中的稀土元素(Ce^(2+)、La^(2+))以晶格金的形式存在。前人研究认为成矿流体中金主要以Au[HS]^(2-)和AuCl_(2)^(-)络合物形式进行迁移,本次含金磷酸盐矿物的发现表明:可能部分金以磷酸根络合物形式进行迁移。The Lazigou gold deposit in Muping District of Shandong Province is located in the Jiaonan-Weihai uplift area of the Sulu orogenic belt of North China Plate and in the middle of the Muping-Rushan gold metallogenic belt,with frequent magmatic activity,intense tectonic activity and superior metallogenic geological conditions.In this work,the mineral composition,chemical composition and occurrence state of gold-bearing minerals were studied by microscopic observation and electron probe test analysis.For the first time,gold-bearing monazite and gold-bearing apatite were discovered in this mining area with gold content of 0.283%~0.456%.It is speculated that gold may be substituted for Ca^(2+)in apatite or REE(Ce^(2+),La^(2+))in monazite in the form of lattice gold through the form of isomorphism.The previous results show that Au[HS]^(2-)and AuCl_(2)^(-)complexes are the main forms of gold migration in ore-forming fluids,and the discovery of gold-bearing phosphate minerals indicates that part of the gold is transferred in the form of a phosphate complex.

关 键 词：电子探针 金的赋存状态 含金独居石 含金磷灰石 金的磷酸根络合物 腊子沟金矿 牟平 山东 

分 类 号：P578.92[天文地球—矿物学] P618.51[天文地球—地质学]