Magnesite
      Oh K D, Morikawa H, Iwai S I, Aoki H
      American Mineralogist 58 (1973) 1029-1033
      The crystal structure of magnesite
      _database_code_amcsd 0000389

      CELL PARAMETERS:    4.6370   4.6370  15.0230   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    279.744
      Density (g/cm3):      3.002
      MAX. ABS. INTENSITY / VOLUME**2:      16.88343394    
      RIR:      1.831
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                32.65        100.00        2.7430    1   0   4         6
                35.86         13.10        2.5038    0   0   6         2
                38.84          6.16        2.3185    1   1   0         6
                42.99         50.02        2.1039    1   1   3        12
                46.83         13.37        1.9398    2   0   2         6
                51.62          5.21        1.7707    0   2   4         6
                53.89         23.52        1.7012    1   1   6        12
                53.90         18.30        1.7011    0   1   8         6
                61.39          5.12        1.5101    2   1   1        12
                62.42          7.69        1.4877    1   2   2        12
                66.44          6.16        1.4072    2   1   4        12
                68.40          2.12        1.3715    2   0   8         6
                69.37          3.03        1.3548    1   2   5        12
                69.37          6.82        1.3547    1   1   9        12
                70.33         13.08        1.3386    3   0   0         6
                76.02          4.85        1.2519    0   0  12         2
                76.94          1.97        1.2392    2   1   7        12
                79.72          2.01        1.2029    0   2  10         6
                81.55          3.19        1.1804    1   2   8        12
                88.83          1.28        1.1016    1   1  12        12
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.