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Minerals, Alteration and Fluid Basic Researchonthe First High Sulfidation Epithermal‐Porphyry Cu (Au) Deposit (Southern Tiegelong Deposit) in Tibet, China
Author(s) -
YANG Chao,
TANG Juxing,
WANG Yiyun,
YANG Huanhuan,
WANG Qin,
DING Shuai,
FANG Xiang
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12375_68
Subject(s) - beijing , chinese academy of sciences , china , geochemistry , geology , library science , mining engineering , geography , archaeology , computer science
and base-metal deposit that can be generally grouped into high sulfidation, intermediate sulfidation and low sulfidation typesbase on the sulfidation states of sulfide assemblages (Hedenquisit et al,1998;Sillitoe et al.,2003).The high sulfidation is one type of the most important Au-Cu deposits, that characterized by minerals assemblages of engarite,pyrite,covllite, Digenite,Chalcocite,Bornite, Chalcopyrite et al., and alteration assemblages of quartz,kaolinite/ dickite,alunite,barite,sericite et al(Sillitoe et al.,2003).It’s very lucky that the first high sulfidationepithermal deposit——Southern Tiegelong depositin Tibetplateau was discovered through the work in 2013(Tang et al.,2014). Southern Tiegelong deposit located in Duolong ore region of Ban-nu Belt,North Tibet,China.There are 2 mainly kinds of porphyry,thatare graniteporphyry and quartzdioriteporphyriteinvaded in middle-Cretaceous, andconduced mineralization at the same time.Jurassic Sewa formation(J1-2s)feldspathicquartzsandstone and CretaceousMeiriqiecuo formation(K1m)andesite are wall rocks, and the feldspathicquartzsandstone are mainly ore body. The deposit not only enriched genetic types of ore deposit in Tibet Plateau, but also hold a super huge amount of mineralresources with over 550mt Cu and 30t Au.