Computer Science
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49.1465g&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 49, Issue 6, pp.1465-1468
Computer Science
19
Scientific paper
Amphibole/liquid partition coefficients for the REE(D amph/liq REE ) obtained from natural rocks increase systematically with bulk rock compositional change from basalt to rhyolite and are higher for the middle to heavy REE. Five new experimentally determined sets of D REE (La, Sm, "Eu 2+ ", Ho, Lu)and 4 published sets are similar to these data and provide values for use in geochemical modelling of magmatic processes involving amphibole, over a range of temperature, pressure and oxygen fugacity. The partition coefficients increase significantly with decreasing temperature, and increase slightly with increasing oxygen fugacity. Pressure does not appear to have a major effect, although one data set suggests increased pressure lowers D amph/liq REE in a basaltic composition.
Green Trevor H.
Pearson Norm J.
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