关键词: 成矿地质背景, 找矿前景, SEDEX, VHMS, 阿拉克湖&mdash, 红水川, 青海省

Abstract:

The achievement data of geology,structure,geophysical and geochemical exploration in Aalake Lake-Hongshuichuan zone illustrate that this area has a good metallogenic background to explore copper(cobalt)-gold deposit.and it is an important mineralization belt of East Kunlun zone.The chief minerals of south structural belt of northern East Kunlun is Cu、Co、Au,secondly is Pb、Zn、W.The types of deposit are volcanic exhalation-sedimentary SEDEX and VHMS types Cu-Au-Co mine related with subsiliceous-medium basic volcanic rocks of Variscan epoch,skarn type,hydrothermal vein type precious metals and polymetallic ore and superposed-reworking type deposits related with medium acidity invade rock.The central part should pay attention to the deluvial and alluvial type of modern placer type alluvial gold and the gypsum-salt deposit.The chief minerals of south part is a Cu、Co、Au,secondly is a Ni、Fe、Cr，the types of ore deposits are massive sulfide type copper-cobalt,and copper-gold ores hosted in Buqinshan Group related with marine facies subsiliceous-medium basic volcanic rocks of Variscan epoch,accompanied with nickel minerals of mafic-ulttramafic magma liquation type with basic-ultrabasic rocks intrusion and crystallized differentiation type chrome iron ore.