Stishovite Ross N L, Shu J F, Hazen R M, Gasparik T American Mineralogist 75 (1990) 739-747 High-pressure crystal chemistry of stishovite P = 0, but in the diamond cell _database_code_amcsd 0001306 4.1801 4.1801 2.6678 90 90 90 P4_2/mnm atom x y z Biso Si 0 0 0 .15 O .3067 .3067 0 .31