西藏尕尔穷铜金矿床及外围地球化学异常特征及其找矿评价  

Characteristics of geochemical anomalies and prospecting of Gaerqiong Cu-Au Deposit in Tibet and its periphery

作　　者：杨毅[1] 张志[1] 唐菊兴[2] 邓世林[3] 姚晓峰[4] 胡正华[1] 杨欢欢[1] 

机构地区：[1]成都理工大学,成都610059 [2]中国地质科学院矿产资源研究所,北京100037 [3]四川省地矿局物探队,成都610000 [4]中国地质调查局发展研究中心,北京100037

出　　处：《有色金属（矿山部分）》2015年第3期42-47,共6页NONFERROUS METALS(Mining Section）

基　　金：国家自然科学基金资助项目(41172077);国家重点基础研究发展计划(973计划)项目(2011CB403103);国土资源部公益性行业科研专项项目(201011013-3)

摘　　要：尕尔穷铜金矿是西藏班公湖—怒江成矿带南缘矽卡岩型矿床的典型代表。矿区及其外围1∶10 000岩石地球化学测量、1∶50 000水系沉积物测量等地球化探特征显示,除矿区Ⅰ号矿体展布区域存在明显的化探异常外,在北东部石英闪长玢岩岩体与碳酸盐岩接触带具有较明显的Cu、Au、Ag、Sb、As等化探异常,该区域化探异常与已发现的石英闪长玢岩岩体存在的物探异常呈连续过渡格局,且在化探异常中,自北东部岩体向外具有明显的Cu+Mo+Sb→Ag+Bi+Au+As→Tl+Li的高温至低温的异常分带,综合显示具备寻找矽卡岩型—斑岩型铜金矿的潜力,尽管此区域并明显无水系沉积物异常,但找矿潜力无疑是较大的。Gaerqiong Cu Au deposit is a typical skarn-type deposit in the southern Bangong Lake-Nujiang River belt, Tibet. The characteristics of 1 ： 10 000 lithogeochemical survey and 1 ： 50 000 stream sediment survey of the deposit and its peripheral suggest that it has obvious geochemical abnormalities in the distribution area of I orebody. The contact zone between quartz diorite porphyry and carbonate develops obvious Cu, Au, Ag, Sb, As geochemical anomaly, the distribution of geophysical anomaly and geochemical anomaly is continuous transition, from northeast magmatic body to outside develops anomaly zone of Cu ＋ Mo ＋ Sb→Ag ＋ Bi ＋ Au q As→ TI ＋ Li which distribute from high temperature to low temperature. Above all, there is great potential to seek for skarn- porphyry type Cu Au deposit. Although no stream sediment abnormalities at this place, the prospecting potential is undoubtedly huge.

关 键 词：地球化学 异常分带 尕尔穷 

分 类 号：TD11[矿业工程—矿山地质测量]