Crystal chemistry of ferromagnesian silicate spinels: evidence for Mg-Si disorder

R. M. Hazen, Robert T Downs, L. W. Finger, Ko Jaidong Ko

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71 Scopus citations

Abstract

Single-crystal X-ray diffraction data have been obtained for synthetic Fe-Mg silicate spinels. The measurements on γ-Mg2SiO4 synthesized at 20 GPa and 1400°C, compared with previous data on a specimen synthesized at 22 GPa and 1000°C, provide evidence that approximately 4% of Sitot enters octahedral coordination in the sample synthesized at higher temperature. Fe-bearing silicate spinels synthesized at lower pressures display no evidence for Fe-Si disorder. -Authors

Original languageEnglish (US)
Pages (from-to)1320-1323
Number of pages4
JournalAmerican Mineralogist
Volume78
Issue number11-12
Publication statusPublished - 1993
Externally publishedYes

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ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Hazen, R. M., Downs, R. T., Finger, L. W., & Jaidong Ko, K. (1993). Crystal chemistry of ferromagnesian silicate spinels: evidence for Mg-Si disorder. American Mineralogist, 78(11-12), 1320-1323.