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 P24, P = 52.6 GPa
      _database_code_amcsd 0017586

      CELL PARAMETERS:    4.3580   4.3580  12.6200   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    207.570
      Density (g/cm3):      5.560
      MAX. ABS. INTENSITY / VOLUME**2:      55.28152127    
      RIR:      3.237
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.54         57.82        3.2390    0   1   2         6
                37.14        100.00        2.4206    1   0   4         6
                41.44         26.47        2.1790    1   1   0         6
                46.96         21.51        1.9348    1   1   3        12
                50.48         23.24        1.8080    2   0   2         6
                56.85         13.58        1.6195    0   2   4         6
                61.25         30.47        1.5133    1   1   6        12
                63.97         15.07        1.4555    0   1   8         6
                65.90          1.28        1.4175    2   1   1        12
                67.29         14.39        1.3914    1   2   2        12
                72.76         13.20        1.2998    2   1   4        12
                75.58         14.43        1.2580    3   0   0         6
                79.13          4.40        1.2103    2   0   8         6
                80.20          2.44        1.1969    1   0  10         6
                81.65          2.11        1.1792    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.