K2Si4O9: energetics and vibrational spectra of glass, sheet silicate, and wadeite-type phases.

K. L. Geisinger, N. L. Ross, P. McMillan, A. Navrotsky

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Calorimetric experiments were performed on three phases of K2Si4O9: a high-P phase with the wadeite structure containing both tetrahedrally and octahedrally coordinated Si, a low-P phase with a complex sheet structure containing solely tetrahedrally coordinated Si, and glass. Newly measured IR and Raman spectra of each phase are presented. -J.A.Z.

Original languageEnglish (US)
Pages (from-to)984-994
Number of pages11
JournalAmerican Mineralogist
Volume72
Issue number9-10
StatePublished - 1987
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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