Raman spectra of shocked minerals. I - Olivine

Details Raman spectra of shocked minerals. I - Olivine Raman spectra of shocked minerals. I - Olivine

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988metic..23..353h&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 23, Dec. 1988, p. 353-357. Research supported by Rice University.

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5

Meteoritic Composition, Olivine, Raman Spectra, Dunite, Grain Size, Laser Applications, Pressure Effects, Silicon Oxides, Vitrification

Scientific paper

The Raman spectra of olivine contained in a chip of the Twin Sisters Peak (Washington) dunite shocked to 22.2 GPa is shown to be identical to that of unshocked olivine in the same rock. The Raman spectra of powder of the rock shocked to 20.1 GPa and of chips shocked to 59.5 GPa and 60.7 GPa display strong and broad low-frequency features with crests at 475/cm, 556/cm, and 572/cm, and broad high-frequency features near 1100/cm. It is suggested that these features are due to the formation of olivine glass with a considerable degree of three-dimensional Si-O-Si linkage having scattered domains of greatly variable grain size, internal structure, and chemical composition.

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