山东旧店金矿黄铁矿标型特征及其地质意义  

Typomorphic Characteristics and Geological Significance of Pyrite in Jiudian Gold Deposit,Shandong Province

作　　者：李逸凡[1] 李洪奎[2,3] 汤启云 禚传源[2,3] 耿科[2,3] 梁太涛[2,3] 

机构地区：[1]潍坊学院建筑与工程学院,山东潍坊261061 [2]山东省地质科学研究院,山东济南250013 [3]国土资源部金矿成矿地质过程与资源利用重点实验室,山东济南250013

出　　处：《黄金科学技术》2015年第2期45-50,共6页Gold Science and Technology

基　　金：山东地质勘查基金项目"山东省胶东地区金矿深部成矿机制与找矿方法研究"(编号:鲁勘字(2010)60号);山东省"泰山学者"建设工程专项经费(编号:鲁政办字(2013)122号)联合资助

摘　　要：以山东旧店金矿床中黄铁矿标型为研究对象，通过对黄铁矿的形态、物性、主成分及微量元素等标型特征的研究，认为旧店金矿可分为5个成矿阶段，黄铁矿是每个成矿阶段的贯通性矿物，也是指示金矿的标型矿物，与金矿化有关的黄铁矿晶形主要为八面体、五角十二面体和立方体，黄铁矿晶胞参数在5．4192～5．4197盖之间。成矿阶段黄铁矿主化学成分表现为亏S、富Fe的特点，黄铁矿各世代Au、Ag、As、Co、Bi、Cu、Pb和Zn等微量元素在第Ⅱ、Ⅲ和Ⅳ成矿阶段富集明显，B、Ni和Sb基本没有富集，而Ti则在全过程中呈现亏损状态。通过黄铁矿Co含量判断出旧店金矿床属于低温热液型矿床，稀土元素分析表明轻稀土富集，尤其富集La和Ce，重稀土亏损，轻稀土富集是富矿石的标志之一。Setting pyrite typomorphic of Jiudian gold deposit in Shandong Province as the research object, through study on the form,properties, typomorphic characteristics,principal components and trace elements of pyrite, it is regarded that Jiudian gold deposit can be divided into five mineralization stages.Pyrite is not only the transfixion mineral in each mineralization stage,but also topomorphic ineral indicates the gold deposit.Pyrite crystal associated with gold mineralization is mainly octahedral,pentagonal dodecahedron and cube.Unit cell parameters of pyrite are 5.4192-5.419% .Main chemical components of pyrite in mineralization stage show the characteristics of loss S and rich Fe. Au,Ag,As, Co,Bi, Cu,Pb,Zn and other trace elements have an evident enrichment in the second,the third and the fourth mineralization phases,B,Ni and Sb have no enrichment basically, and Ti shows a loss in the whole process.Through content of Co in pyrite, it is concluded that Jiudian gold deposit belongs to low temperature epithermal deposit.As showed by rare elements, it is indicated light rare earth elements are enriched,particularly La and Ce elements,while high rare earth elements are loss.The enrichment of light rare earth elements is the symbol of rich ores.

关 键 词：黄铁矿 标型特征 微量元素 旧店金矿 山东省 

分 类 号：P618.51[天文地球—矿床学]