The crystal structure of low melanophlogite

  title={The crystal structure of low melanophlogite},
  author={T. Nakagawa and K. Kihara and K. Harada},
  journal={American Mineralogist},
  pages={1506 - 1512}
  • T. Nakagawa, K. Kihara, K. Harada
  • Published 2001
  • Chemistry
  • American Mineralogist
  • Abstract The crystal structure of the low temperature form of natural melanophlogite, 46SiO2 · 6M14 · 2M12 (M14 = N2, CO2; M12 = CH4, N2), was determined using single-crystal X-ray diffraction data at room temperature. The structure is tetragonal with space group P42/nbc and unit cell a = 26.818(2) and c = 13.365(1) Å, which is the (2 × 2 × 1) superstructure of high-temperature cubic melanophlogite and includes four formula units. The structure with 335 variable parameters including anisotropic… CONTINUE READING
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