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 P1, P = 1.89 GPa
      _database_code_amcsd 0017562

      CELL PARAMETERS:    4.6760   4.6760  15.3100   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    289.904
      Density (g/cm3):      3.981
      MAX. ABS. INTENSITY / VOLUME**2:      47.40638515    
      RIR:      3.877
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                24.87         36.30        3.5795    0   1   2         6
                32.18        100.00        2.7816    1   0   4         6
                38.51         21.15        2.3380    1   1   0         6
                42.53         16.45        2.1256    1   1   3        12
                46.39         19.53        1.9575    2   0   2         6
                51.03         10.65        1.7898    0   2   4         6
                52.92         19.09        1.7303    0   1   8         6
                53.13         28.49        1.7238    1   1   6        12
                60.82          1.80        1.5230    2   1   1        12
                61.81         12.59        1.5009    1   2   2        12
                65.14          2.48        1.4321    1   0  10         6
                65.70          9.93        1.4212    2   1   4        12
                67.32          4.07        1.3908    2   0   8         6
                68.17          2.23        1.3755    1   1   9        12
                68.54          1.06        1.3691    1   2   5        12
                69.66          9.84        1.3498    3   0   0         6
                74.35          3.43        1.2758    0   0  12         2
                78.29          2.93        1.2212    0   2  10         6
                80.32          5.02        1.1953    1   2   8        12
                87.00          3.10        1.1199    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.