Abstract
Samples of synthetic diaplectic anorthite glass (38 GPa shock pressure), thermal glass and synthetic anorthite crystals were investigated using infrared spectral methods at one atmosphere and high pressures (near 4 GPa). Band positions and pressure derivatives for the Si-O asymmetric modes in the region 1,300–900 cm−1 indicate that the diaplectic glass has more structural similarities with the crystalline material than with thermal glass even though the overall infrared spectral characteristics suggest a glassy state.
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Velde, B., Syono, Y., Couty, R. et al. High pressure infrared spectra of diaplectic anorthite glass. Phys Chem Minerals 14, 345–349 (1987). https://doi.org/10.1007/BF00309808
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DOI: https://doi.org/10.1007/BF00309808