摘要
金川南延地区出露近百处基性-超基性岩体,查清这些岩体的活动规律及其与金川含矿岩体的关系,对南延地区找矿具有十分重要的意义。本文通过显微镜鉴定、X射线粉晶衍射及岩石化学分析等方法,研究了金川南延地区的基性-超基性岩的岩石学和地球化学特征,并与金川含矿超基性岩体进行了对比分析。结果表明,南延地区出露的变辉橄岩与金川含矿岩体有类似的矿物组成、相近似的微量元素含量,以及相似的稀土配分曲线,表明它们是同源岩浆演化岩体在不同地段侵入的产物。
There are more than 100 basic-ultrabasic rocks distribute in the southern Jinchuan deposit.Understanding the activities of these rocks and their relationship with the ore-bearing intrusions is extremely significant for prospecting in the southern part.We studied the petrologic and geochemical features of the basic-ultrabasic rocks by the techniques of microscope,X-ray powder diffraction and geochemical analysis.The results showed that the josefite in the research area has the similar mineral composition,and the similar content of trace elements and the similar distribution of REE with the ore-bearing intrusions,indicating that they may evolve from a same magma activity.
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2010年第4期409-416,共8页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家"十一.五"科技支撑项目(2006BAB01B08)
中澳国际科技合作项目(2007DFA20910)
广西研究生教育创新计划资助项目(2009105960709M06)
关键词
金川
铜镍矿床
基性超基性岩
岩石学
地球化学
Jinchuan
copper-nickel deposit
basic ultrabasic rocks
petrology
geochemical
