A thermochemical study of the distribution of cobalt and nickel between diopsidic pyroxene and melt

Thermodynamic modeling of the NiO–SiO2, MgO–NiO, CaO–NiO–SiO2, MgO–NiO–SiO2, CaO–MgO–NiO and CaO–MgO–NiO–SiO2 systems

“…21. That is, the experimental results of Wright and Navrotsky 89 are slightly inconsistent with experimental data by Pretorius and Muan 70 . In the present study, the experimental data by Pretorius and Muan 70 were considered more accurately.…”

“…Wright and Navrotsky 89 It was found that these experimental data can be reproduced with assumption that CaNiSi 2 O 6 and CaMgSi 2 O 6 forms an ideal solution. Although the experimental data of Wright and Navrotsky 89 can be reproduced with negative interaction parameter between Mg and Ni in the M1 site, L Ca:Mg,Ni , this can noticeably increase the liquidus of clinopyroxene in Fig. 20 and reduce the oxygen partial pressures in Fig.…”