摘要
闪锌矿和方铅矿是矿床主要矿物。不同世代闪锌矿的晶形、颜色、维氏硬度、显微比重和矿物共生组合不同，反映闪锌矿的形成条件有别。闪锌矿富Ｃｄ，Ｇａ，而贫Ｆｅ，Ｍｎ，Ｉｎ；方铅矿富Ｓｂ贫Ｂｉ。矿石值多接近陨石值，均一化程度较高；铅同位素以正常铅为主，成矿物质主要来源于地层，部分为深部来源，局变质热液层控矿床．
Sphalerite and galena are the main ore minerals of Laochang Pb-Zn deposit.The differences of morphology,color,hardness,specific gravity and mineral assemblage of sphalerites ofdifferent generations reflect the differences of their forming conditions.The sphalerites are richin Cd an Ga and low in Fe,Mn and In,whereas galenas are rich in Sb and low in Bi.valuesin ore are mainly located near Oyline.The degree of homogenization of sulfur isotope is relatively high.The composition of lead isotope is mainly normal lead.Ore-forming materials arederived mainly from stratum and a part from deep magmatic fluid. The ore deposit is of themiddle to low temperature hydrothermal stratabound type.
关键词
铅锌矿床
闪锌矿
方铅矿
矿床成因论
矿物标型
Pb-Zn deposit
sphalerite
galena
typomorphism of mineral
genesis of the oredeposit
Guangxi
