Mösbauer spectroscopic study of the decomposition mechanism of ankerite in CO2 atmosphere
- 1 September 1989
- journal article
- Published by Mineralogical Society in Mineralogical Magazine
- Vol. 53 (372) , 465-471
- https://doi.org/10.1180/minmag.1989.053.372.06
Abstract
Mössbauer spectroscopy has been used to identify the iron-containing products that are formed during the thermal decomposition of ankerite in a CO2 atmosphere. The decomposition takes place in three stages and evidence is produced to show that the first stage involves decomposition of ankerite to yield a periclase-wustite solid solution, (Mg,Fe)O, along with calcite and CO2, the periclase-wustite then reacting with CO2 to produce magnesioferrite (MgFe2O4) and CO. In the second stage the magnesioferrite and calcite react to produce periclase and dicalcium ferrite. The third stage does not involve reaction of Fe-containing phases and corresponds to the decomposition of calcite to CaO.Keywords
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