新疆沙尔布拉克金矿床中的层状电气石岩特征及成因  

CHARACTERISTICS AND GENESIS OF BEDDED TOURMALINITE IN THE SHAERBULAKE GOLD DEPOSIT,XINJIANG

作　　者：李秀华[1] 陈尚迪[1] 周云霞 

机构地区：[1]成都理工学院沉积地质研究所,新疆地矿局第四地质队

出　　处：《成都理工学院学报》1996年第1期1-7,共7页Journal of Chengdu University of Technology

摘　　要：沙尔布拉克金矿主要赋存于下石炭统南明水组第二岩性段第二亚段中，含矿岩石为安山质凝灰岩和沉凝灰岩。作者在赋矿层中首次发现了层状电气石岩。电气石岩与围岩产状一致，具明显的显微纹层构造；主要成分为微粒镁电气石，其次有石英、长石，少量粘土矿物、毒砂和黄铁矿。矿物岩石学和地球化学特征表明该区展状电气石岩属热水喷流同生沉积成因。The Shaerbulake gold deposit occurs in C1n2-2Member of the Lower CatboniferousNanmingshui Formation. The ore-bearing rock is composed mainly of andesitic tuff and tuffite.Bedded tourmallnite was discovered for the first take in ore-hosted strata.The oecurrence of tourmalinite is the same as that of wall rock,but the obvious feature of the tourmalinite is microlaminated structure. The bedded tourmalinite is composed mainly of micrograined dravite, and secondly, of quartz,feldspar,a few caly mineral,arsenopyrite and pyrite. The mineralogical , petrologicaland geochemicaldata indicate that the hydrothermal exhchtive deposition during the syngenesigperiod is the origin of bedded tourmahoite.

关 键 词：金矿床 电气石 喷流岩 热水喷流作用 

分 类 号：P618.510.4[天文地球—矿床学]