老王寨金矿成因的岩相学和元素地球化学分析  

Petrography and element geochemical analysis of origin for Laowangzhai gold deposit

作　　者：蔡飞跃[1] 刘显凡[1] 陶专[1] 赵甫峰[1] 蔡永文[1] 

机构地区：[1]成都理工大学地球科学学院,成都610059

出　　处：《矿产勘查》2010年第3期215-222,共8页Mineral Exploration

基　　金：国家自然科学基金项目(编号:40773031);南京大学内生金属矿床成矿机制研究国家重点实验室开放研究基金项目(编号:14-08-3);成都理工大学矿物学岩石学矿床学国家重点(培育)学科建设项目(编号:SZD0407)联合资助

摘　　要：文章通过对老王寨金矿围岩、矿化岩、矿石和脉体的岩相学和元素地球化学的系统研究,认为成矿流体富集轻稀土、不相容元素和高场强元素,岩矿石具有受到地幔流体交代作用改造的特征,初步揭示了金矿成矿过程的深部地质作用特征,表现为交代流体主要来源于富集地幔,但在交代蚀变过程中不可避免地与地壳物质和流体发生一定程度的混染叠加而成矿。Based on the analysis of the petrography and element geochemistry of wall.rocks, mineralized rocks, ores and veins in Laowangzhai gold deposit, the characteristics for mantle fluid metasomatism in rocks and ores are expressed by enriching LREE, incompatible elements and HFSE in metallogenie fluid. The characteristics of deep geological process, whose metasomatie fluid was derived from enrichment mantle, in gold metallogenesis, is proposed in this paper. There inevitably were these overprint contaminations, which should be in favor of metallogenesis, for materials of mantle and crust in the deep geology - geochemistry processes.

关 键 词：老王寨金矿 岩相学 元素地球化学 深部地质作用 壳幔混染 

分 类 号：P618.15[天文地球—矿床学] P595[天文地球—地质学]