EarthRef.org Reference Database (ERR) -- Schnetzler & Philpotts 1970

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Schnetzler & Philpotts 1970

Schnetzler, C.C. and Philpotts, J.A. (1970). Partition coefficients of rare-earth elements between igneous matrix material and rock-forming mineral phenocrysts; II. Geochimica et Cosmochimica Acta 34(3): 331-340. doi: 10.1016/0016-7037(70)90110-9.

Solid-liquid partition coefficients between phenocrysts and the host lavas have been measured for rare-earth elements by an isotope dilution technique. Phenocrysts analyzed include clinopyroxenes, orthopyroxenes, olivines, micas, amphiboles, garnet, plagioclases and K-feldspar. The consistency of much of the data suggests that most of the phenocrysts crystallized under equilibrium, or quasi-equilibrium, conditions. There is sufficient data on pyroxenes and feldspars to indicate that relative and absolute partition coefficients can be correlated with the major element composition of the phenocrysts. The size of the positive Eu anomaly in feldspars increases with increasing alkali content of the feldspar.

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	Table 1A
	Table 1B
	Table 2

Keywords
abundance; composition; igneous rocks; metals; partition, coefficients; rare earths, 05, Igneous and metamorphic petrology

Journal
Geochimica et Cosmochimica Acta
http://www.elsevier.com/wps/product/cws_home/212

Publisher
Elsevier Science
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