Abstract Details
(2020) Carbon Mineralization in Ultramafic Mine Tailings: A Pathway to Negative Greenhouse Gas Emissions
Dipple G, Lu X, Vanderzee S, Wynands E, Baidya D, Ghoreishi-Madiseh SA & Cutts J
https://doi.org/10.46427/gold2020.587
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08r: Room 3, Wednesday 24th June 23:15 - 23:18
Gregory Dipple
View all 7 abstracts at Goldschmidt2020
View abstracts at 5 conferences in series
Xueya Lu View all 2 abstracts at Goldschmidt2020 View abstracts at 3 conferences in series
Sterling Vanderzee View all 3 abstracts at Goldschmidt2020 View abstracts at 2 conferences in series
Eric Wynands View all 2 abstracts at Goldschmidt2020 View abstracts at 2 conferences in series
Durjoy Baidya
Seyed Ali Ghoreishi-Madiseh
Jamie Cutts View all 3 abstracts at Goldschmidt2020 View abstracts at 3 conferences in series
Xueya Lu View all 2 abstracts at Goldschmidt2020 View abstracts at 3 conferences in series
Sterling Vanderzee View all 3 abstracts at Goldschmidt2020 View abstracts at 2 conferences in series
Eric Wynands View all 2 abstracts at Goldschmidt2020 View abstracts at 2 conferences in series
Durjoy Baidya
Seyed Ali Ghoreishi-Madiseh
Jamie Cutts View all 3 abstracts at Goldschmidt2020 View abstracts at 3 conferences in series
Listed below are questions that have been submitted by the community that the author will try and cover in their presentation. To submit a question, ensure you are signed in to the website. Authors or session conveners approve questions before they are displayed here.
Submitted by Fulvio Di Lorenzo on Monday 22nd June 11:04
Magnesium carbonate hardly precipitate at room temperature as anhydrous mineral (magnesite), rather hydrated phases use to form (hydroxyl carbonates, e.g. hydromagnesite). These phases have high variability in the stoichiometry, but in general the atomic ratio (Mg:C) is never 1:1 as for MgCO3. Do you know which Mg-bearing carbonate phase will form as the most abundant product? The stoichiometry of the product phase could significantly reduce the maximum CO2 sequestration capacity expected for the mining wastes (unless the total Mg content of the substrate is not offset taking into account the stoichiometry of the Mg-bearing product).
Magnesium carbonate hardly precipitate at room temperature as anhydrous mineral (magnesite), rather hydrated phases use to form (hydroxyl carbonates, e.g. hydromagnesite). These phases have high variability in the stoichiometry, but in general the atomic ratio (Mg:C) is never 1:1 as for MgCO3. Do you know which Mg-bearing carbonate phase will form as the most abundant product? The stoichiometry of the product phase could significantly reduce the maximum CO2 sequestration capacity expected for the mining wastes (unless the total Mg content of the substrate is not offset taking into account the stoichiometry of the Mg-bearing product).
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