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Porphyry copper deposit controlled by structural nose trap:Yulong porphyry copper deposit in eastern Tibet

TANG JuXing~ 1,2 , ZHANG Li~1, LI ZhiJun~1, CHEN JianPing~3, HUANG Wei~4 and WANG Qian~2 (1 Institute of Mineral Resources, CAGS, Beijing 100037, China; 2 College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, Sichuan, China; 3 China University of Geosciences, Beijing 100081, China; 4 No.6 Geological Party, Tibet Bureau of Geology and Mineral Exploration and Development, Lhasa 851400, Tibet, China)  
This paper studied the formation of the Yulong porphyry copper deposit controlled by the anticline trap structure and the distribution of the ore bodies. According to such factors as the modes of occurrence of the ore bodies in the metallogenic series, the characteristics of mineralogy and geochemical primary halos, and the principal stress locus of the trap structure, the authors consider that the porphyry type (No. Ⅰ ore body), skarn type ( No. Ⅱ and No. Ⅴ primary layered ore bodies, No. Ⅴ upper layered ore body), skarn_secondary enrichment copper type (No. Ⅱ and No. Ⅴ layered secondary oxidized ore body), hornstone type (sulfide ore body in the hornstone of the contact zone) and blind explosive breccia type ore body in the Yulong copper deposit were all controlled by the Ganlongla plunging anticline trap structure. Hence, this deposit is related to the structural nose trap of the plunging anticline.
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