Experiments on the simultaneous exchange of Ni2+, Mg2+, Co2+, Zn2+, Fe2+, Mn2+, Ca2+ and Sr2+ between hedenbergite or tremolite and 2M aqueous chloride solutions were carried out in the temperature range of 500 to 800°C, 1 kb. The PC-IR curves for the both minerals show a similar shape and have peaks near Ni2+ and Ca2+. The former peak corresponds to 6 coordination and the latter peak to 8 coordination. The PC-IR curves suggest that Ni2+, Mg2+ and Fe2+ are partitioned preferably in 6 coordination of the minerals and Mn2+, Ca2+ and Sr2+ in 8 coordination. However Co2+ and Zn2+ deviate from such a trend. The ion selectivity decreases with increasing temperature.
|ジャーナル||Japanese Magazine of Mineralogical and Petrological Sciences|
|出版ステータス||Published - 2005|
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