La microspectrometrie Raman des grenats X3Y2Z3O12: II. La serie alumineuse naturelle pyrope-almandine-spessartite

Translated title of the contribution: Raman microspectrometry of garnets X3Y2Z3O12: II. The natural aluminian series pyrope-almandine-spessartine

M. Pinet, D. C. Smith

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18 Scopus citations

Abstract

Following article I (Pinet & Smith), 1993) which presented data on natural calcic garnets, the Raman spectra of 52 natural aluminian garnets along the series pyrope-almandine and almandine-spessartine are compared with each other and with grossular which is simultaneously aluminian and calcic. For most of the 12 principal bands and numerous weak bands or shoulders identified amongst the 25 bands theoretically predicted, the wavenumber positions reveal quasi-linear trends by following step by step the variation in chemical composition. Only ten of the interpolations between the end-members proposed by Hofmeister and Chopelas (1991) are correct, the others are definitely incorrect or leave uncertainties. There are thus several problems in establishing the correspondence of Raman spectra between different compositions. -from English summary

Translated title of the contributionRaman microspectrometry of garnets X3Y2Z3O12: II. The natural aluminian series pyrope-almandine-spessartine
Original languageFrench
Pages (from-to)161-179
Number of pages19
JournalSchweizerische Mineralogische und Petrographische Mitteilungen
Volume74
Issue number2
StatePublished - 1994
Externally publishedYes

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