青海省枪口南银多金属矿区地球化学异常特征及找矿潜力

枪口南银多金属矿位于东昆仑多金属成矿带东段，1：2.5万沟系沉积物测量在矿区圈定出以Ag、Cu、Pb、Zn、Mo为主的综合异常4处.经异常查证，圈出9条矿化带，21条矿（化）体，取得了较好的找矿效果.通过进一步异常查证，在AS1、AS2异常中Ⅶ、Ⅷ和Ⅸ号矿带内圈出银、银铅锌以及银金砷异常高值段，展示出了异常区具较好的银多金属矿的找矿远景.AS3异常内的Ⅳ号含矿花岗斑岩体深部发现多条铜多金属矿（化）体，且发育较强的围岩蚀变，显示具有较好的斑岩型铜多金属矿找矿潜力.AS4异常内Ⅰ－Ⅲ号金矿化带具较好的金多金属矿找矿潜力.本区具有优越的成矿地质条件，化探异常发育，且已发现了较好的银多金属矿找矿信息，充分展示出本区具较大的找矿潜力.

GEOCHEMICAL ANOMALIES AND PROSPECTING POTENTIAL OF QIANGKOUNAN SLIVER POLYMETALLIC OREFIELD IN QINGHAI PROVINCE

The Qiangkounan silver polymetallic orefiled is located in the eastern section of East Kunlun polymetallic metallogenic belt. Four integrated anomalies (AS1-AS4) dominated by Ag, Cu, Pb, Zn and Mo are identified by the 1:25000 scale trench sediment survey. Through anomaly verification, 9 mineralized zones and 21 ore (mineralized) bodies are delineated with good prospecting results. The Ag, Ag-Pb-Zn and Ag-Au-As high value areas in Ⅶ, Ⅷ and Ⅸ ore belts of AS1 and AS2 anomalies are determined by further anomaly verification, which shows a good prospect for Ag-polymetallic deposit in the area. Many Cu-polymetallic ore (mineralized) bodies are found in the deep ore-bearing granite porphyry bodies in AS3 anomaly with strong wall rock alteration, indicating good porphyry Cu-polymetallic deposit prospecting potential, while theⅠ-Ⅲ gold mineralized belts in AS4 anomaly have good prospects for Au-polymetallic deposit. From the above, the favorable metallogenic conditions, developed geochemical anomalies and informative clues of Ag-polymetallic ore prospecting fully show that the area has great prospecting potential.