新疆阿舍勒铜锌矿床矿石化学组分分带研究及意义  

CHEMICAL COMPONENTS ZONING OF ORES IN THE ASHELE COPPER-ZINC DEPOSIT,XINJIANG,AND ITS IMPLICATION

作　　者：王全明[1] 方一平[1] 冯京 

机构地区：[1]中国地质科学院区划室,新疆地矿局第四地质大队

出　　处：《矿床地质》1995年第4期314-321,共8页Mineral Deposits

摘　　要：阿舍勒铜锌矿床是近年来发现的大型火山成因块状硫化物矿床之一。由于矿床成矿后遭受构造变质变形作用，使矿体的形态、产状发生了很大变化，所以矿体的分带结构也很难保留该类矿床所具有的理想分带型式。因此，研究矿床分带性，对于了解矿床的成矿方式以及确定矿体的分布型式、产出状态，进而指导找矿预测等方面均具一定意义。笔者主要从研究矿石化学组分分布特征入手，在采集（４６９件）和收集大量钻孔矿石微量元素定量测试样品的基础上，采用分带序列、元素含量比值和因子分带等方法，对矿床的分带结构进行了研究。By means of zonal succession,content ratios and factor zonality,the authors studied zona-tion of ore components in the Ashele copper-zinc massive slfide deposit. Some understanding hasbeen drawn from the research :(1)with the overlying spilite as the core,the orebody occurs as anoverturned syncline;vertically,from the bottom to top of the massive sulfide lens,the ore com-ponents show zonation of Sn,Mo,Co,Cu,Bi-Au,As,Sb,Ag-Pb,Zn,Hg and Ba;(2)the orebOdy occurring on the normal limb of the syncline has not been completely disclosed in that thechalcopyrite-pyrite and pyrite beds characterized by rich Mo,Co,Sn and Bi were not found,suggesting that further prospecting work can be done toward the depth;(3) the massive sulfidedeposit was formed through the discharging of hydrothermal fluid from the near-surface channelat the southerm part(south of 4th line)to a depression in the north;as a result,it exhibits fromsouth to north the primary zoning of altered pipe-massive polymetallie sulfide ore (4th-lst line)→massive sphalerite-chalcopyrite-pyrite ore→massive chalcopyrite-pyrite ore(5th-9th line).

关 键 词：铜矿床 锌矿床 矿石 化学成分 分带性 

分 类 号：P618.410.4[天文地球—矿床学] P618.430.4[天文地球—地质学]