Rates of reaction of pyrite and marcasite with ferric iron at pH 2
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Flotation performance of chalcopyrite in the presence of an elevated pyrite proportion
2022, Minerals EngineeringWater-oxygen interaction on marcasite (1 0 1) surface: DFT calculation
2022, International Journal of Mining Science and TechnologyCitation Excerpt :Both marcasite and pyrite are iron sulfides, but they have distinct mineralogical properties, chemical reactivity, and oxidation kinetics. Because of its orthogonal lattice, marcasite was considered less stable than cubic pyrite [35]. Elsetinow et al. [36] synthesized marcasite films under vacuum conditions and investigated the reactivity of marcasite in an oxidizing environment.
Oxidative dissolution of hydrothermal mixed-sulphide ore: An assessment of current knowledge in relation to seafloor massive sulphide mining
2017, Ore Geology ReviewsCitation Excerpt :Sphalerite is shown to consistently oxidise throughout the early stages of dissolution in the presence of pyrite at pH 6, evidenced by increasing Zn concentrations throughout with concentrations remaining consistent or falling slightly after day 50. Other important factors include Fe3+ (Antonijević et al., 1997; Dimitrijevic et al., 1996; McKibben and Barnes, 1986), Fe2+ (Garrels and Thompson, 1960; Moses and Herman, 1991; Rimstidt and Vaughan, 2003), impact of stirred/unstirred conditions (Chandra and Gerson, 2010; Holmes and Crundwell, 2000; Wiersma and Rimstidt, 1984), and Eh (which is correlated with dissolved oxygen (DO) and Fe3+) (Chandra and Gerson, 2010; Williamson and Rimstidt, 1994). As discussed earlier, mixed sulphide minerals and the potential for galvanic coupling highlight the significance of electrochemical processes (Chandra and Gerson, 2010).
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