NDLI: Trimodal distribution of CO$_{2}$-bearing fluid inclusions in the gold — silver-bearing quartz veins of the Phuoc Thanh area, Central Vietnam: Its implication to the Au−Ag precipitation

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Trimodal distribution of CO$_{2}$-bearing fluid inclusions in the gold — silver-bearing quartz veins of the Phuoc Thanh area, Central Vietnam: Its implication to the Au−Ag precipitation

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Trimodal distribution of CO$_{2}$-bearing fluid inclusions in the gold — silver-bearing quartz veins of the Phuoc Thanh area, Central Vietnam: Its implication to the Au−Ag precipitation

Content Provider	Springer Nature Link
Author	Lee, Insung Shin, Dongbok
Copyright Year	2003
Abstract	CO$_{2}$-rich fluid inclusions from quartz veins provide information about pressure-temperature conditions, as well as effervescence, in the gold-silver-bearing quartz veins in the Phuoc Thanh area, Central Vietnam. Homogenization temperatures of fluid inclusion are bimodal, and support textural evidence that mineralization occurred in two stages. 90% of the fluid inclusions in the quartz are CO$_{2}$-bearing. The trimodal distribution of CO$_{2}$ mole fraction of the inclusions are common in the area, which indicates the CO$_{2}$ unmixing, resulting the separation of the high (type IIb) and low (type IIa1) XCO$_{2}$ fluids from the parental fluid (type IIa2) with intermediate XCO$_{2}$. The precipitation of associated sulfide and Au−Ag minerals is related to CO$_{2}$ effervescence with a concomitant decrease in sulfur activity. The temperature of mineralization is estimated as the range from 300 to 380°C in stage I and from 230 to 300°C in stage II. Pressure of ore formation ranged from 350 to 500 bars during both stages.
Starting Page	21
Ending Page	26
Page Count	6
File Format	PDF
ISSN	12264806
Journal	Geosciences Journal
Volume Number	7
Issue Number	1
e-ISSN	15987477
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	fluid inclusion carbon dioxide Au Ag quartz vein effervescence Vietnam Geosciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Environmental Science

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