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High-pressure and high-temperature Raman spectroscopy of end-member garnets; pyrope, grossular and andradite

Philippe Gillet, Guillaume Fiquet, Jean Marie Malezieux and Charles A. Geiger
High-pressure and high-temperature Raman spectroscopy of end-member garnets; pyrope, grossular and andradite
European Journal of Mineralogy (August 1992) 4 (4): 651-664

Abstract

The effect of P <= 22 GPa and T (<= 1300 K) on the Raman spectra has been measured on three natural garnets approaching end-member composition. All Raman modes increase or decrease linearly with P and T, respectively. Generally the high-frequency modes (800-1000 cm (super -1) ) have larger shifts than those lying below 650 cm (super - 1) . For garnets and olivines correlations between the mean frequency shift and crystal bulk modulus, are found for the bending modes of SiO (sub 4) polyhedra and lattice modes, in contrast to minerals in which the dominant compression measurement is polyhedral tilting (e.g. quartz and perovskite) which do not follow the orthosilicate trend.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 4
Serial Issue: 4
Title: High-pressure and high-temperature Raman spectroscopy of end-member garnets; pyrope, grossular and andradite
Affiliation: Universite de Rennes I, Laboratoire de Mineralogie Physique, Rennes, France
Pages: 651-664
Published: 199208
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 41
Accession Number: 1995-056291
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 6 tables
Secondary Affiliation: Universite de Bordeaux III, FRA, FranceUniversitaet Bayreuth, DEU, Federal Republic of Germany
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199520
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