Siderite
      Lavina B, Dera P, Downs R T, Yang W, Sinogeikin S, Meng Y, Shen G, Schiferl D
      Physical Review B82 (2010)  064110-8
      Structure of siderite FeCO3 to 56 GPa and hysteresis of its spin-pairing transition
      Locality: Invigtut, Greenland
      Note: run P19, P = 46.4 GPa
      _database_code_amcsd 0017580

      CELL PARAMETERS:    4.3670   4.3670  12.7800   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    211.071
      Density (g/cm3):      5.468
      MAX. ABS. INTENSITY / VOLUME**2:      55.79332399    
      RIR:      3.322
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.40         55.27        3.2546    0   1   2         6
                36.83        100.00        2.4406    1   0   4         6
                41.35         25.79        2.1835    1   1   0         6
                46.75         21.24        1.9431    1   1   3        12
                50.32         23.14        1.8132    2   0   2         6
                56.55         13.26        1.6273    0   2   4         6
                60.75         30.79        1.5247    1   1   6        12
                63.18         15.53        1.4716    0   1   8         6
                65.73          1.39        1.4206    2   1   1        12
                67.10         14.49        1.3950    1   2   2        12
                72.43         12.97        1.3048    2   1   4        12
                75.40         14.24        1.2606    3   0   0         6
                78.36          4.40        1.2203    2   0   8         6
                79.10          2.49        1.2107    1   0  10         6
                80.72          2.22        1.1904    1   1   9        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.