摘要
秦岭泥盆系铅锌成矿带中闪锌矿微量元素特征表明矿床属海底喷气成矿，成矿流体温度为低温．矿床可划分沉积和热液改造两大成矿期，以前者为主．沉积作用形成的闪锌矿富Ｇａ、Ｇｅ、Ｃｄ，浅色，晶胞参数小；后期热液改造形成的闪锌矿富Ｆｅ、Ｍｎ、Ｉｎ、Ｓｅ，色深，晶胞参数大．
The microelement signature of the sphalerite in the Qinling Devonian system Lead-zinc metallogenic beltindicates that the deposits belong to submarine exhalation-sedimentary. The temperature of ore -forming fluidis part of low temperature. The metallogenic epoch of deposits may divide into the sedimentogemic diageneticmetallogeuic ePOch and hydrothermal metallogentic epoch. As compared with the later epoch, the sedimentation epoch is of main ore-forming process. The sphalerite formed by sedimentation contains rich gallium, germanium and cadmium. Its color is light,unit cell parameter is small. The sphalerite formed by the hydrotermalsolution of the later period contains rich iron, manganese, indium and selenium. Its color is deep, unit cellparameter is large.
基金
地矿部"七五"攻关资助
关键词
泥盆纪
铅锌矿床
成矿带
闪锌矿
Qinling
Devonian system
Microelement
Unit cell parameter
