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Trace-element partitioning between synthetic potassic-richterites and silicate melts, and contrasts with the partitioning behaviour of pargasites and kaersutites

Massimo Tiepolo, Alberto Zanetti, Roberta Oberti, Richard Brumm, Stephen Foley and Riccardo Vannucci
Trace-element partitioning between synthetic potassic-richterites and silicate melts, and contrasts with the partitioning behaviour of pargasites and kaersutites (in Special issue dedicated to the memory of Luciano Ungaretti, Maria Chiara Domeneghetti (prefacer))
European Journal of Mineralogy (April 2003) 15 (2): 329-340

Abstract

Solid/liquid partition coefficients for LILE, HFSE, REE, Pb, Th, U and selected transition elements (Sc, V) were determined by SIMS on potassic-richterites synthesized at upper mantle conditions (1.4 GPa and 800-1020 degrees C) to match silica-rich lamproites. In general, (super S/L) D values are low in potassic-richterites and different partitioning patterns are apparent for REE and LILE. These results are discussed in terms of the distinct crystal-chemical behaviour of the involved amphibole end-members, with particular emphasis on charge-balance mechanisms and site dimensional constraints. It is implied that melts produced from amphibole-bearing sources may differ markedly depending on the type of amphibole crystallized. The role of potassic-richterite in lamproites, peralkaline ultramafic veins in the lithospheric mantle and in deeper parts of subduction zones is discussed.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 15
Serial Issue: 2
Title: Trace-element partitioning between synthetic potassic-richterites and silicate melts, and contrasts with the partitioning behaviour of pargasites and kaersutites
Title: Special issue dedicated to the memory of Luciano Ungaretti
Affiliation: CNR, Istituto di Geoscienze e Georisorse, Pavia, Italy
Pages: 329-340
Published: 200304
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 60
Accession Number: 2003-032475
Categories: General geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 7 tables
Secondary Affiliation: Universitat Gottingen, DEU, Federal Republic of GermanyUniversitat Greifswald, DEU, Federal Republic of GermanyUniversita di Pavia, ITA, Italy
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 200311
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