NJG46-3-10
1966
Notes. Distribution of some elements among minerals of Norwegian eclogites.
46
3
364-368

Coexisting clinopyroxene, orthopyroxene, and garnet from a lens of eclogitic rocks of Norway are analysed for their Mg, Ni, Co, Zn, Fe, and Mn contents. Examination of their distribution among these three phases reveals that: 1) in the pair orthopyroxene-clinopyroxene, the partition is essentially controlled by the size of the cations, so that, as far as the moderate-sized ions as listed above are concerned (except for Mn) , the smaller ions prefer clinopyroxene, and 2) in the pair garnet-clinopyroxene, the partition is controlled by two factors, i.e. that the larger ions prefer garnet and that the less electronegative ions are excluded from garnet.

0029-196X
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