兰坪金顶铅锌矿床膏盐与成矿关系初探  

The Preliminary Study of Gypsum and Mineralization of Jinding Pb-Zn Deposits in Lanping

作　　者：李彬[1] 薛传东[1] 董帅[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《科学技术与工程》2012年第20期4880-4883,共4页Science Technology and Engineering

摘　　要：通过对兰坪金顶铅锌矿的最新野外调查以及相关的钻孔资料发现,膏盐在地表以及地下的产出形态与铅锌矿体密切相关。通常矿化程度高的主矿体部位膏盐也特别发育,盐丘底辟也影响着矿体的矿化蚀变分带,矿石特征以及矿物组合从盐丘的中心向矿化围岩呈现有规律的变化。同时,铅锌矿床所需大量的H2S主要是以硫酸盐的热化学还原成因(TSR)形成的,矿区地层大量的膏盐体是H2S的主要物源。According to the latest observation of Jinding Pb-Zn deposits in Lanping and the study of Borehole data, the form of gypsum underground and on the surface is closely related to the Pb-Zn body. Gypsum grows usual- ly in the area of main body of high degree of mineralization. Salt domes also influence the zoning of the mineraliza- tion and alteration of the ore body. There are many regular changes in the characteristics of ore and mineral assem- blages from the center of the salt dome to the mineralized wall rock. At the same time, large amount of H2 S appear because of the thermochemical reduction reaction of sulfate TSR） in Pb-Zn deposit. The large number of gypsum in mining strata layers is the main source of the H2 S.

关 键 词：膏盐 矿化蚀变分带 矿物组合 硫酸盐的热化学还原成因 TSR 

分 类 号：P618.42[天文地球—矿床学]