Abstract
Raman spectra of natural and synthetic samples of stishovite have been measured with a micro-optical spectrometer system. These spectra have a pattern that is characteristic of rutile-structured oxides. The spectrum of synthetic stishovite is characterized by well-resolved bands at 231, 589, 753, and 967 cm−1, which are assigned as theB 1g,E g,A 1g, andB 2g fundamentals, respectively, of the first-order Raman spectrum of the ideal, ordered structure. Natural stishovite obtained from Meteor Crater, Arizona has a first-order Raman spectrum that is fully consistent with that of the synthetic material. The observed spectrum of the natural sample, however, is weaker and has bands in addition to those identified as fundamentals in the spectrum of the synthetic material. A broad band at ∼475 cm−1 may be indicative of glass or contaminants derived from the extraction procedure. Alternatively, this band may arise from multiphonon scattering that is enhanced by poor crystallinity or structural disorder in the natural shocked sample.
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Hemley, R.J., Mao, H.K. & Chao, E.C.T. Raman spectrum of natural and synthetic stishovite. Phys Chem Minerals 13, 285–290 (1986). https://doi.org/10.1007/BF00308345
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DOI: https://doi.org/10.1007/BF00308345