摘要
文章在研究闽中地区铅锌矿床蚀变矿物组合的基础上,将辉石矿物的化学成分与典型矽卡岩Pb_Zn矿床的辉石成分进行了对比,认为该区铅锌矿床的辉石与典型矽卡岩中的辉石类似,为透辉石和钙铁辉石,富锰,具有远温端矽卡岩辉石的特征。因此推论本区铅锌矿床大部分类似于矽卡岩型Pb_Zn矿床,少数为受断裂控制的热液脉型矿床,是海底火山喷发沉积形成的初始矿源层经变质作用、燕山期构造_岩浆热液顺层交代、强烈叠加改造或活化并重新定位的矿床。
Based on a study of the altered mineral assemblage from Pb-Zn deposits in central Fujian Province, the authors compared their pyroxenes in chemical composition with those from skarn Pb-Zn deposits. It is considered that the pyroxenes from the Pb-Zn deposits in this area are similar to those from skarn Pb-Zn deposits, being manganese-rich diopside and hedenbergite with features of distal skarn pyroxenes. It is thus concluded that the Pb-Zn deposits are mostly akin to skarn Pb-Zn deposits and partly belong to hydrothermal deposits controlled by faults, and that they are ore deposits subjected to metamorphism, replacement, superposition along the bed, strong reformation, or remobilization and deposition by Yanshanian tectono-magmatic hydrothermal fluids.
出处
《矿床地质》
CAS
CSCD
北大核心
2006年第2期123-134,共12页
Mineral Deposits
基金
国家自然科学基金(40372050)
中国地质调查局工作项目(200310200064)的联合资助
关键词
地质学
辉石
成分特征
构造-岩浆热液矿床
闽中
geology, pyroxene, composition characteristics, tectono-magrnatic hydrothermal deposit, central Fujian Province
