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silicon manganese quartzite

1) S. Popova, T. Tolstykh, V. Vorobev. Optical characteristics of amorphous quartz in the 1400–200 cm -1 region, Opt. Spectrosc. 33, 444–445 (1972), as cited in Ref. 2. 2) R. Kitamura, L. Pilon, M. Jonasz. Optical constants of silica glass from extreme ultraviolet to far infrared at near room temperature, Appl. Opt. 33, 8118-8133 (2007)

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