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Article type: Research Article
Authors: Zhao, Chongbina; b | Hobbs, B.E.a | Mühlhaus, H.B.a | Ord, A.a | Lin, Geb
Affiliations: [a] CSIRO Division of Exploration and Mining, P.O. Box 1130, Bentley, WA 6102, Australia | [b] Changsha Institute of Geotectonics, Chinese Academy of Sciences, Changsha, China
Abstract: We use the finite element method to model three-dimensional steady-state convective pore-fluid flow and the relevant mineralization in fluid-saturated rocks when they are heated from below. In particular, we investigate lead/zinc precipitation and dissolution patterns caused by the reactive sulfide and sulfate fluids mixing in three-dimensional hydrothermal systems. The related numerical results demonstrated that: (1) The finite element method is useful in and applicable to the modelling of three-dimensional ore body formation and mineralization problems in fluid-saturated porous rocks; (2) The mixing of reactive sulfide and sulfate fluids is an important mechanism to generate high-grade lead/zinc deposits in three-dimensional hydrothermal systems in the upper crust of the Earth.
Keywords: Finite element analysis, natural convection, chemical reaction in porous materials, flow through porous materials, minerals occurrences and deposits, reactive flows
DOI: 10.3233/JCM-2003-3106
Journal: Journal of Computational Methods in Sciences and Engineering, vol. 3, no. 1, pp. 73-89, 2003
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