CO2-dominated fluids and their roles in alteration, deformation, and gold mineralization in the Red Lake greenstone belt, Canada
The Red Lake greenstone belt is one of the foremost gold mining camps in Canada. A previous study reported the prevalence of H2O-poor, CO2-dominated fluid inclusions and rare occurrence of aqueousbeating inclusions in carbonate-quartz-gold veins in the Campbell-Red Lake deposit, the largest one in the greenstone belt. Further study indicates that such fluid inclusions are also present in other small gold occurrences and non-mineralized veins. Evidence is provided to support the non-H2O-leakage origin of the CO2-dominated fluid inclusions and the existence ofH2O-poor, CO2-dominated fluids. Such fluids may have resulted from phase separation of an initially CO2-enriched fluid, and are responsible for extensive carbonatization, brittle features of carbonate veins at great depths, and gold transport and deposition.
G.Chi Y.Liu J.Lai
Department of Geology, University of Regina, Regina, Canada Department of Geology, University of Regina, Regina, Canada;School of Geoscience and Environmental E
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
121-125
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）