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The partitioning of Cr3 + , Mn2+, Co2+ and Ni2+ between olivine and mafic silicate liquid has been studied under anhydrous conditions at 1 bar total pressure and temperatures of 1120° to 1270°C. The results suggest that 1) the partition coefficients for Cr, Mn, Co and Ni are strongly temperature dependent, 2) at constant temperature Deo is independent but Der, Djln and Dx; are dependent upon melt composition, 3) the partition cofficients are greater than one at these temperatrue ranges and the preference sequenc is Ni > Co > Mn > Cr, 4) the partition cofficients do not vary as a function of element content in the melt, 5) all partition coefficients can be used in geothermometry, the relative temperature accuracy being within ± 20°C.

Partitioning of chromium, manganese, cobalt and nickel between olivine and basaltic liquid: an experimental study