三江成矿带藏东段斑岩铜矿找矿前景预测  

Perspective forecast of prospecting in the eastern part of Sanjiang metallogenic belt

作　　者：张金树[1,2] 多吉 何政伟[1] 唐菊兴[4] 钟康惠[1] 杨海锐[1] 

机构地区：[1]成都理工大学,成都610059 [2]西藏自治区地质调查院,拉萨850000 [3]西藏自治区地质矿产勘查开发局,拉萨850000 [4]中国地质科学院矿产资源研究所,北京100037

出　　处：《有色金属（矿山部分）》2011年第3期29-33,共5页NONFERROUS METALS(Mining Section）

摘　　要：通过成矿地质背景、矿产地质特征、区域地球化学特征分析,对三江成矿带藏东段的斑岩铜(铜/金)矿成矿潜力进行了评价,并用多种方法估算了不同级别的远景资源量。指出:1)藏东三江成矿带地质构造背景独特,化探异常,斑岩体分布及已有矿床(点)等矿化显示良好,成矿条件优越,具有巨大的成矿远景。2)三江成矿带藏东段可划分出玉龙铜钼、刚达铜金、妥坝铜钼、类乌齐-东达山铜钼、江达铜金等五个斑岩型铜成矿远景区。3)三江成矿带藏东段,在0.2%铜边界品位可比条件下,铜远景资源量为2 200～4 200万t,钼远景资源量为45～200万t;在0.1%铜边界品位可比条件下,铜远景资源量达6 600万t;通过进一步地质工作可获铜地质资源量为2 500～10000万t。Based on the characteristics of mineralization geological background,resource geology and regional geochemistry,metallogenic potential of Porphyry copper（copper/gold） located in Sanjiang metallogenic belt of eastern Tibet was valued.Besides,several methods were employed to value the potential resources at different levels.All these discussions lead to following conclusions： 1） considering the special geological structure,geochemical anomalies,porphyry and existing deposits（spot） distribution which shows a good state.Sanjiang metallogenic belt in eastern Tibet has great ore resource potential.2） The belt can be divided into five porphyry copper mineralization zones,such as Yulong copper molybdenum zone,Gangda copper-gold zone,Tuoba copper-molybdenum zone,Leiwuqi-Dongdashan copper-molybdenum zone and Jiangda copper-gold zone.3） Under the condition of 0.2% of copper cut-off grade,comparably,the storage resource of copper in this area ranges from 22 to 42 million tons and molybdenum from 0.45 to 2 million tons.And when the cut-off grade reduces to 0.1%,the storage resources of copper can reach up to 66 million tons.Through further geological work,about 25 million tons to100 million tons of copper can be acquired.

关 键 词：三江成矿带 藏东段 斑岩铜矿 找矿前景 资源量估算 

分 类 号：TD15[矿业工程—矿山地质测量]