广西古袍金矿床的成因矿物学研究

广西古袍金矿床的合金石英脉,可划分为变质热液、岩浆热液与复成因三类,后者应为今后找矿的主要类型。根据铅、硫、氢、氧同位素资料;石英结构铝、碱量,包裹体成分及黄铁矿微量元素等成因信息,论证了成矿物质来源、成矿流体演化与成矿的关系。金的富集是处于造山带构造环境,经历加里东及其以后构造-岩浆作用多次叠加的长期演化过程。据矿物的成因信息和控矿条件,认为矿区西南部的外围应为今后找矿的远景地区。

GENETIC MINERALOGICAL STUDIES OF THE GOLD DEPOSIT IN GUPAO,GUANGXI

The gold-bearing quartz veins in the Gupao Gold Deposit can be di-vided into three types, metamophic-hydrothermal, magmatic-hydrother-mal and complexed in accordance with genesis. The third type of quartzvein should be promising for exploration from now on.According to genetic informations of isotopes of lead, sulphur hydr-ogen and oxygen, of structural aluminium and alkali contents, of com-position of inclusion in quartz and trace elements in pyrite, etc.,thispaper discusses the relation-among the source of ore-forming material, theevolution of ore-forming fluids and mineralization. Gold was enrichedin the tectonic setting of orogenic belts reduplicated by Caledonian andlater tectonomagmatic activities for long and many times.On the ground of the genetic informations of minerals and the vari-ous conditions controlling gold mineralization, the writers have proposedthat the promising area for looking for gold deposits is situated to thesouthwestern of the mining district.