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.