巴彦诺尔公花岗岩体与乌力吉花岗岩体的地球化学特征及成矿意义  

Geochemical characteristics and prospecting significance of the Bayannuoergong and Wuliji granite bodies in Inner Mongolia

作　　者：王喜宽[1] 张丽莉[1] 廖蕾[1] 丛立民[2] 

机构地区：[1]内蒙古自治区地质调查院,内蒙古呼和浩特010020 [2]内蒙古自治区115地质队,内蒙古乌兰浩特137400

出　　处：《华南地质与矿产》2004年第1期24-28,共5页Geology and Mineral Resources of South China

摘　　要：巴彦诺尔公花岗岩体和乌力吉花岗岩体均属二叠纪花岗岩,两岩体在地球化学组成上基本一致,均富SiO2,K2O和Al2O3,富集轻稀土,而重稀土亏损。其差别是:前者属钙碱性岩石(σ=1.91),较富集Fe,Mg,Ca,Cu,Cr,sr,Ba和F,而后者为钙性岩石(σ=1.68)较富集W,As,Sb和Au等。两岩体不仅为其周围矿产的形成提供了充分的热液,也提供了丰富的物质来源。正是由于充分的热液活动和物质迁移以及后期富集形成了朱拉扎嘎大型金矿。The Permian Bayannuoergong and Wuliji granitic bodies have similar geochemical characteristics and are characterized by rich in Si, K, Al, LREE and depleted in HREE. On the other hand,the Bayannuoergong granite body is relatively richer in Fe,Mg,Ca,Cu,Zr,Sr,Ba and F, belonging to calc-alkaline rock series; while the Wuliji granite body is relatively richer in W,As,Sb and Au, belonging to calcic rock series. Research shows that the two granitic bodies provided both sufficient hydrothermal fluids and gold sources for formation of the large-sized Zhulazhaga gold deposit.

关 键 词：花岗岩 地球化学 二叠纪 轻稀土 重稀土 矿床成因 

分 类 号：P588.121[天文地球—岩石学] P611[天文地球—地质学]