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Hydrotalcites and hydrated Mg-carbonates as carbon sinks in serpentinite mineral wastes from the Woodsreef chrysotile mine, New South Wales, Australia: Controls on carbonate mineralogy and efficiency of CO2 air capture in mine tailings

Turvey, Connor C; Wilson, Siobhan; Hamilton, Jessica L; Tait, Alastair; McCutcheon, Jenine; Beinlich, Andreas; Fallon, Stewart; Dipple, Greg; Southam, Gordon


Carbon mineralisation of ultramafic mine tailings can reduce net emissions of anthropogenic carbon dioxide by reacting Mg-silicate and hydroxide minerals with atmospheric CO2 to produce carbonate minerals. We investigate the controls on carbonate mineral formation at the derelict Woodsreef chrysotile mine (New South Wales, Australia). Quantitative XRD was used to understand how mineralogy changes with depth into the tailings pile, and shows that hydromagnesite [Mg5(CO3)4(OH)2·4H2O], is present...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: International Journal of Greenhouse Gas Control
DOI: 10.1016/j.ijggc.2018.09.015


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