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矿床地质  2001 

澳大利亚纳沃日金矿流体混合与金的成矿作用

Keywords: 流体混合,成矿热液,成矿作用,纳沃日,西澳大利亚

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Abstract:

流体包裹体研究表明,纳沃日金矿成矿脉体中流体包裹体类型有三种,富CH4、CH4-CO2-H2O和富H2O包裹体。初始成矿流体是富CH4热液,在主矿化阶段,另一来源的CO2-H2O流体与CH4流体发生了不均匀混合,并且在石英一磁黄铁矿阶段最为强烈,造成不同矿化部位的xCH4变化极大,早期近于纯CH4流体被充分“稀释”,石英-黄铁矿阶段的XCH4显著减小,到成矿晚期只剩CO2-H2O流体。正是由于不同性质流体的混合,造成热液的pH及f02的升高,流体中的金-硫络合物分解,金沉淀成矿。

References

[1]  [1]Arnold R,Gordon C and LloydC.1995.Geology and mining of Nevoria gold mine[A].In:Schwebel PJ,ed..Southern CrossGreenstone Belt,Geology and Gold Mines:Southern Cross,Western Australia[C].GeoconferenceExtended Abstract.97~101.
[2]  [2]Bakker R J.1997.Clathrates:Computer programs to calculate fluid inclusion V-Xproperties using clathrate melting temperatures[J].Computers & Geosciences,23:1~18.
[3]  [3]Bouchot V,Fan H R,Vanderhor F,et al.1996.Temporal relationships between barrencalc-silicate and auriferous quartz-sulphide veins at the Nevoria gold deposit,YilgarnBlock,Australia:Evidence for both pre- and post-peak metamorphic hydrothermalevents[A].Abstract of 30th International Geological Congress[C],Beijing,2:760p.
[4]  [4]Brown P E,Hagemann S G.1995.MacFlincor and its application to fluids in Archeanlode-gold deposits[J].Geochimica et Cosmochimica Acta,59:3943~3952.
[5]  [5]Cullen I,Jones M and Baxter J L.1990.Nevoria gold deposits[A].In:HugherFE,ed..Geology of the Mineral deposits of Australia and Papua New Guinea[C].The AustralianInstitute of Mining and Metallurgy,Melbourne,301~305.
[6]  [6]Gee R D.1995.Regional geology of the Southern Cross greenstone belt[A].in SchwebelPJ,ed..Southern Cross Greenstone Belt,Geology and Gold Mines[C].Southern Cross,WesternAustralia Geoconference Extended Abstract.11~16.
[7]  [7]Groves D I.1993.The Crustal continuum model for late-Archaean lode-gold deposits ofthe Yilgarn Block,Western Australia[J].Mineralium Deposita,28:366~374.
[8]  [8]Groves D I,Goldfarb R J,Knox-Robinson C M,et al.2000.Late-kinematic timing oforogenic gold deposits and significance for computer-based exploration techniques withemphasis on the Yilgarn Block,Western Australia[J].Ore Geology Reviews,17:1~38.
[9]  [9]Ho S E,Groves D I,McNaughton N J,et al.1992.The source of ore fluid and solutes inArchaean lode-gold deposits of Western Australia[J].Journal of Volcanic and GeothermalResearch,50:173~196.
[10]  [10]Hollister L S,Burruss R C.1976.Phase equilibria in fluid inclusions from theKhtada metamorphic complex[J].Geochimica et Cosmochimica Acta,40:163~175.
[11]  [11]Mernagh T P,Witt W K.1994.Early methane-rich fluids and their role in Archean goldmineralisation at the Sand King and Missouri deposits,Eastern Goldfields Province,WesternAustralia[J].AGSO Journal of Australia Geology and Geophysics.15:297~312.
[12]  [12]Mullis J.1987.Fluid inclusion studies during very low-grademetamorphism[A].In:Frey M,ed.,Low Temperature Metamorphism[M].Blackie:Glasgow,162~199.
[13]  [13]Ramboz C,Schnapper D,Dubessy J.1985.The P-V-T-X-fO2 evolution of H2O-CH4-CO2-bearingfluid in a wolframite vein,Reconstruction from fluid inclusion studies[J].Geochimica etCosmochimica Acta,49:205~219.
[14]  [14]Ridley J,Hagemann S G.1999.Interpretation of post-entrapment fluid-inclusionre-equilibration at the Three Hill,Marvel Loch and Griffins Find high-temperaturelode-gold deposits,Yilgarn Black,Western Australia[J].Chem.Geol.,154:257~278.

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