Partition coefficients for trace elements in silicic magmas

Details Partition coefficients for trace elements in silicic magmas Partition coefficients for trace elements in silicic magmas

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49.2309n&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 49, Issue 11, pp.2309-2322

Physics

55

Scientific paper

Trace element partition coefficients for 29 elements, including the rare earths, have been calculated for augite, hypersthene, sanidine, plagioclase, quartz, biotite, titanomagnetite and ilmenite from rhyodacite and rhyolite at Twin Peaks, Utah. Partition coefficients are intermediate to those reported from dacite and high silica rhyolite. At Twin Peaks, as in less silicic magmas, partitioning between phenocrysts and melt is governed primarily by crystal structure constraints as opposed to very high silica systems where the structure and volatile content of the melt become the dominant control of trace element partitioning.

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