Antigorite with a large supercell from Saganoseki, Oita Prefecture, Japan

S. Uehara, K. Kamata

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23 Citations (Scopus)

Abstract

Variations in supercell parameters and chemical compositions for nine samples of antigorite from the Saganoseki area were studied. The XRD patterns give various A parameters of the supercell as well as varying subcell dimensions. Furthermore, SAED patterns show a wider range of A parameters, from 32 to 60 Å. The antigorite from Saganoseki has a high Al/Fe value. The large parameters of the supercell in antigorite are characteristic of serpentinites formed under low-temperature and high-temperature and high-pressure (pumpellyite-actinolite facies) conditions. The AEM rsults suggest that the correlations of the Fe contents or the Al contents with M parameter are not always distinct within a specimen, and may depend on other structural and chemical parameters. -from Authors

Original languageEnglish
Pages (from-to)93-103
Number of pages11
JournalCanadian Mineralogist
Volume32
Issue number1
Publication statusPublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology

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