黄铁矿中富铜闪锌矿的斑点状结构  

SKELETAL CRYSTAL TEXTURE OF CU-RICH SPHALERITE IN PYRITE FROM DAJING DEPOSIT

作　　者：王玉往[1,2] 王京彬[1,2] 王莉娟[1,2] 

机构地区：[1]北京矿产地质研究所,北京100012 [2]中国科学院矿产资源研究重点实验室,北京100101

出　　处：《矿物学报》2003年第1期12-16,共5页Acta Mineralogica Sinica

基　　金：中国科学院知识创新工程 (批准号 :KZCX1-0 7) ;国家自然科学基金 (批准号 :D0 3 0 4-4 0 2 73 0 2 1)

摘　　要：内蒙古大井矿床中产出一种奇特的闪锌矿斑点结构 ,闪锌矿斑点包裹于黄铁矿中 ,通过显微镜研究和电子探针分析 ,认为该闪锌矿斑点属罕见的富铜闪锌矿 ,w(Cu)为 3 87%～ 6 99% ,平均 5 3 7% ,其成因与在黄铜矿中的闪锌矿斑点一样 ,是高温下出溶作用的产物。An unusual texture — skeletal sphalerite in stellar, cruciform and snowflake like (or cauliflower like) shapes in pyrite is widely recognized in the Dajing tin polymetallic deposit. It was discovered for the first time in natural ore d eposits. The composition of this sphalerite crystal is characterized by high Cu content (3 87% — 6 99% with a mean of 5.37%). The skeletal crystal sphalerite in pyrite was possibly produced by exsolution under high temperature, just lik e sphalerite star in chalcopyrite.

关 键 词：黄铁矿 富铜闪锌矿 斑点状结构 电子探针 显微镜 黄铜矿 

分 类 号：P578.23[天文地球—矿物学] P578.292[天文地球—地质学]