Fluid characheristics of the Baoxingchang Cu-Mo Deposit, Yunnan Province, SW China. Issue 2 (January 2021)

• Record Type: Journal Article
• Authors: Dao, Yan; Jian, Long; Xiao, Gaoqiang; Zhang, Yourong; Xu, Shengchao
• Is Part Of: IOP conference series. Volume 632:Issue 2(2021)
• Publication Date: 2021-01
• Subjects: Fluid inclusions -- copper-molybdenum deposit -- Baoxingchang; Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/632/2/022042
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: The Baoxingchang Cu-Mo deposit is an important deposit in the Jinshajiang-Red River alkali-rich porphyry area, Western Yunnan. Fluid inclusion petrography and inclusion microscopic thermometric analysis of quartz phenocrysts in non-mineralized porphyritic granite, lamprophyre quartz veins, molybdenite quartz veins, copper-pyrite-molybdenite quartz veins, and pyrite quartz veins show that the development in primary inclusion of quartz phenocrysts and quartz veins can include vapour-rich inclusions and liquid-rich inclusions. Fluid inclusions are characterised by their medium-high temperature and moderate salinity. However, the temperature and salinity of non-mineralised quartz fluid inclusions are higher than those of quartz fluid inclusions in the mineralisation stage. Captured pressure and mineralisation depth during mineralisation reveal that the copper-molybdenum deposit is formed in hypabyssal environment, which is consistent with porphyry metalloginic systems.