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Ore‐forming Fluid Characterization of Tibet's Largest Porphyry Cu‐Mo Deposit, Qulong: Insights into the Super Accumulation of Cu and Mo
Author(s) -
LI Yang,
SELBY David,
FEELY Martin,
COSTANZO Alessandra,
LI Jianwei
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 - 10.1111/1755-6724.12379_31
Subject(s) - chinese academy of sciences , china , library science , geology , history , art history , archaeology , computer science
The Gangdese Porphyry Copper Belt (GPCB) hosts a series of world class Miocene porphyry Cu deposits (Fig.1), which are directly linked with Indo-Asian continent collision (Yang et al., 2009). Porphyry deposits are major resources of Cu, Mo, Re and provide significant amounts of other precious metals (e.g. Au and Ag), and represent one of the most studied class of hydrothermal ore deposit (Sillitoe,2010). However, the process of ore deposition, still remains poorly understood. The Qulong porphyry deposit, located in the eastern part of GPCB, is the largest porphyry Cu-Mo system in China and hosts 10.4 Mt Cu with an average grade of 0.5 % and about 0.5 Mt of Mo with an average grade of 0.03 %. A study of the ore-forming fluids of the Qulong Porphyry Cu-Mo deposit is presented here based on vein and alteration mineral content, vein cutting relations, and fluid inclusion distribution and analysis to understand the processes of super accumulation of Cu and Mo and the temporal evolution of the exsolving fluids.