MINERAL/MATRIX PARTITION-COEFFICIENTS FOR ORTHO-PYROXENE, PLAGIOCLASE, AND OLIVINE IN BASALTIC TO ANDESITIC SYSTEMS - A COMBINED ANALYTICAL AND EXPERIMENTAL-STUDY

DUNN T., ŞEN C.

GEOCHIMICA ET COSMOCHIMICA ACTA, vol.58, no.2, pp.717-733, 1994 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 58 Issue: 2
  • Publication Date: 1994
  • Doi Number: 10.1016/0016-7037(94)90501-0
  • Journal Name: GEOCHIMICA ET COSMOCHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.717-733
  • Karadeniz Technical University Affiliated: No

Abstract

Mineral/matrix partition coefficients have been determined for a large suite of elements including Li, Be, Ti, V, Cr, Mo, Rb, Sr, Y, Zr, Nb, Cs, Ba, REEs, Ta, Pb, Th, and U for olivine, orthopyroxene, and plagioclase from a suite of calc-alkaline volcanics from Mt. Adams, Washington. The partition coefficients were determined via a combination of ICP-MS bulk analyses and IPMA microanalyses. The IPMA data were used to correct the larger ICP-MS data set for matrix contamination effects. Crystallization temperatures and the extent of equilibration between crystalline phases and host matrices were evaluated via 0.1 MPa phase equilibrium experiments. The result is a comprehensive set of partition coefficients, determined simultaneously on the same samples, which may be applied to studies of the petrogenesis of anhydrous calc-alkaline magmas.