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《Mineral Deposits》 2008-02
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Magmatic intrusion center and mineralization center of Qulong porphyry Cu-Mo deposit in Tibet:Evidence from fissure-veinlets and mineralization intensity

XIAO Bo1,2,3,LI GuangMing1,2,QIN KeZhang1,2,LI JinXiang1,2,ZHAO JunXing1,2,3,LIU XiaoBing3,4,XIA DaiXiang5,WU XingBing5 and PENG ZhenWei6(1 Institute of Geology and Geophysics, CAS, Beijing 100029, China; 2 Key Lab of Mineral Resources, Institute of Geology and Geophysics, CAS, Beijing 100029, China; 3 Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 4 Institute of Tibetan Plateau Research, CAS, Beijing 100085, China; 5 Tibet Ju Long Copper Ltd., Lhasa 850030, Tibet, China;6 Department of Geology, Moscow State University, Moscow 11923, Russia)  
The Qulong porphyry Cu-Mo deposit is at present the largest typical porphyry type deposit in the Gangdese porphyry copper ore belt. Based on detailed field work, this paper deals with the distribution of fissure-veinlets at the surface and the data of bore core Cu and Mo grades. With these data, the authors drew the contour diagrams of surface fractures and bore core Cu and Mo grades at the altitude of 5 000 m. These contour diagrams show features of surface fissure-veinlets quotiety and bore core Cu and Mo grades: fissure-veinlets are highly developed and continuously distributed without obvious multiple centers, Cu and Mo mineralizations are also evenly distributed, and the high grade areas are centralized. In the Qulong superlarge porphyry Cu-Mo deposit there only exist a single magmatic intrusion and a mineralization center, both of which are located near the rectangular region formed by drilling cores 405, 1205, 801 and 809.
【Fund】: 自然科学基金项目(40772066);; 青藏973项目斑岩铜矿课题(2002CB412605);; 西藏巨龙铜矿有限公司的资助
【CateGory Index】: P618.41
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