Crystal chemistry of Ca-bearing majorite

R. M. Hazen, R. T. Downs, L. W. Finger, P. G. Conrad, T. Gasparik

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Single crystals of Ca-bearing majorite have been synthesized at 18.2 GPa and 2050°C. This sample is the first silicate garnet to display ordering on both octahedral and dodecahedral sites - behavior that may increase the compositional flexibility of garnet, affect element partitioning at high pressure, and stabilize the garnet structure in the transition zone and upper portion of the lower mantle. The garnet is tetragonal, and like MgSiO3 majorite, displays twinning by twofold rotation about [110]. -from Authors

Original languageEnglish (US)
Pages (from-to)581-584
Number of pages4
JournalAmerican Mineralogist
Volume79
Issue number5-6
StatePublished - Jan 1 1994
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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    Hazen, R. M., Downs, R. T., Finger, L. W., Conrad, P. G., & Gasparik, T. (1994). Crystal chemistry of Ca-bearing majorite. American Mineralogist, 79(5-6), 581-584.