河南省栾川赤土店地区银铅锌成矿地质条件及找矿前景

河南省栾川赤土店地区银铅锌矿主要位于卢氏 -栾川台缘褶皱带 ,这里有著名的世界级南泥湖钼矿田。此前地质工作重点是钼矿、铁矿、水晶和金矿 ,对铅锌银矿产工作甚少。近年来在总结了南泥湖钼 (钨 )矿田区域成矿地质条件和物化探异常分布的基础上 ,对其处围的找矿有望地区进行异常检查、1∶1万地质测量 ,少量地表工程揭露 ,取得了铅锌银找矿工作的突破性进展 ,发现了十余处矿脉集中区、上百条含矿断裂带及蚀变岩型银铅锌矿带 ,初步估算的铅、锌资源量达数百万吨、银资源量数千吨 ,并指出燕山期的一些小岩体附近的物化探异常区是进一步找矿的重点靶区。

Metallogenic Geological Condition and Prospects of AgPb and Zn Deposits in Chitudian Region, Luanchuan County, Henan Province

In Chitudian region, Luanchuan county, Henan province, AgPb and Zn deposits are mainly located in Lushi-Chitudian platform edge fold belt, in which existed a world grade Nannihu Mo mine field. So far, dominant geological work was on MoFeAu and mountain crystal deposits, very few on PbZn and Ag resources. Now on the basis of regional metallogenetic conditions, geophysical and geochemical anomaly horizontal zonation, PbZn and Ag polymetal resources survey makes breakthrough progress. More than 10 ore-vein-concentric regions were found aroud Nannihu Mo deposit. And we also found a hundred-fault belds with mineralizition and an altered-rock-type Ag-Pb-Zn ore beld. The estimating Pb, Zn resources are about one million tons, and Ag about several thousand tons. The finding of many polymetal deposits not only has important significance on exploration of AgPbZn polymetal deposit at south margin of North China Platform, but also play an altive role in developing economy of the adjacent area of Hubei, Henan and Shan'xi provinces.