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 P4, P = 7.31 GPa
      _database_code_amcsd 0017565

      CELL PARAMETERS:    4.6370   4.6370  14.9800   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    278.944
      Density (g/cm3):      4.137
      MAX. ABS. INTENSITY / VOLUME**2:      47.97304198    
      RIR:      3.775
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.16         39.25        3.5392    0   1   2         6
                32.70        100.00        2.7388    1   0   4         6
                38.84         21.04        2.3185    1   1   0         6
                43.01         18.34        2.1029    1   1   3        12
                46.84         20.06        1.9394    2   0   2         6
                51.65         10.84        1.7696    0   2   4         6
                53.97         29.65        1.6989    1   1   6        12
                54.04         18.65        1.6971    0   1   8         6
                61.40          1.84        1.5101    2   1   1        12
                62.43         12.73        1.4876    1   2   2        12
                66.47         10.17        1.4067    2   1   4        12
                66.63          2.44        1.4035    1   0  10         6
                68.52          4.00        1.3694    2   0   8         6
                69.41          1.10        1.3540    1   2   5        12
                69.52          2.58        1.3521    1   1   9        12
                70.33         10.85        1.3386    3   0   0         6
                76.28          3.51        1.2483    0   0  12         2
                79.89          2.94        1.2007    0   2  10         6
                81.66          5.05        1.1791    1   2   8        12
                89.08          2.85        1.0991    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.