Magnesite
      Markgraf S A, Reeder R J
      American Mineralogist 70 (1985) 590-600
      High-temperature structure refinements of calcite and magnesite
      Sample: T = 200 C
      _database_code_amcsd 0000991

      CELL PARAMETERS:    4.6390   4.6390  15.0650   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    280.769
      Density (g/cm3):      2.991
      MAX. ABS. INTENSITY / VOLUME**2:      16.55834918    
      RIR:      1.802
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                32.59        100.00        2.7477    1   0   4         6
                35.76         13.22        2.5108    0   0   6         2
                38.82          6.10        2.3195    1   1   0         6
                42.95         50.08        2.1057    1   1   3        12
                46.81         13.14        1.9409    2   0   2         6
                51.56          5.23        1.7724    0   2   4         6
                53.76         18.08        1.7051    0   1   8         6
                53.81         23.31        1.7038    1   1   6        12
                61.36          4.87        1.5108    2   1   1        12
                62.38          7.39        1.4885    1   2   2        12
                66.38          6.10        1.4083    2   1   4        12
                68.27          2.10        1.3738    2   0   8         6
                69.22          6.67        1.3573    1   1   9        12
                69.29          2.86        1.3560    1   2   5        12
                70.29         12.80        1.3392    3   0   0         6
                75.77          4.71        1.2554    0   0  12         2
                76.83          1.85        1.2407    2   1   7        12
                79.53          1.91        1.2052    0   2  10         6
                81.41          3.12        1.1821    1   2   8        12
                88.57          1.23        1.1041    1   1  12        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.