HP-HT behavior of ankerite as a function of Fe content and cation disorder
收藏ESRF Portal2027-01-01 更新2026-04-23 收录
下载链接：
https://doi.esrf.fr/10.15151/ESRF-ES-1916846898
下载链接
链接失效反馈官方服务：
资源简介：
Carbonates are the most important C–bearing minerals and key phases in the Earth’s carbon cycle. Their complex stability fields at HP – HT conditions are strongly influenced by both chemical composition and cation ordering. As in the lower mantle the carbonates composition is supposed to be enriched in Fe, the importance of a deep knowledge of the behaviour of (dis)ordered Fe-bearing carbonates at non-ambient conditions is evident. However, the stability of (dis)ordered ankerite Ca(Mg1-xFex)(CO3)2 (0≤x≤0.7) and its polymorphs at HP – HT is a poorly explored field. The present proposal is aimed at studying the crystal structure evolution of both ordered and disordered ankerites from room conditions up to 70 GPa and 800 K, by means of high-resolution SC-XRD experiments. The obtained results will allow to cover P – T conditions from (cold and hot) subducting slabs towards the Earth's mantle, integrating the phase stability of ankerite with the effect of cation disorder.
提供机构：
Universita di Perugia, Dipartimento di Fisica e Geologia, Via Pascoli, 06100 Perugia, Italy; Universita di Perugia, Dipartimento di Scienze della Terra, Piazza Universita, 06100 Perugia, Italy; Universitaet Potsdam, Institut fuer Geowissenschaften, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
创建时间：
2027-01-01
