摘要
湖北花椒树坪锌矿床以锌为主,铅为辅,伴生硫、镉和银。矿体呈透镜状、似层状产出,属层控铅锌矿床。金属硫化物主要为闪锌矿、方铅矿和黄铁矿,其成分特征是闪锌矿亏Zn、方铅矿亏Pb、黄铁矿亏S;依据矿物间的包裹关系判断,其矿物生成顺序为黄铁矿—闪锌矿—方铅矿。伴生元素镉主要以类质同象方式赋存于闪锌矿中。银在方铅矿和闪锌矿中均有分布,且闪锌矿中的银含量高于方铅矿。通过对金属硫化物成分和闪锌矿的微量元素分析,对比国内外同类矿床,结合硫同位素资料,矿床形成温度为中低温,其成矿温度介于142～262℃之间,其特征在成因上可与密西西比河谷型矿床对比。
Zinc deposits are primary,whereas lead deposits are secondary in association with sulfur,cadmium and silver in,in association with sulfur,cadmium and silver.Lenticular stratiform shape is a stratabound lead-zinc deposits.Metal sulfides are mainly sphalerite,galena and pyrite.Deposit forming temperature is in the low temperature and deforming temperature is from 142 ℃ to 262 ℃ after analyzing sulphides sphalerite composition and trace element,comparing with similar deposits at home and abroad,combining with sulfur isotope data.Its Characteristics of the causes can be compared with the Mississippi Valley type deposits.
出处
《资源环境与工程》
2010年第6期659-664,共6页
Resources Environment & Engineering
关键词
矿石矿物
微量元素
类质同象
分配系数
层控
ore mineral
trace element
isomorphism
partition coefficient strata-bound
