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 P6, P = 18.37 GPa
      _database_code_amcsd 0017567

      CELL PARAMETERS:    4.5870   4.5870  14.2580   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    259.805
      Density (g/cm3):      4.442
      MAX. ABS. INTENSITY / VOLUME**2:      49.77507921    
      RIR:      3.648
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.67         41.80        3.4701    0   1   2         6
                33.79        100.00        2.6530    1   0   4         6
                39.28         23.12        2.2935    1   1   0         6
                43.83         17.69        2.0656    1   1   3        12
                47.52         20.84        1.9134    2   0   2         6
                52.76         11.42        1.7350    0   2   4         6
                55.70         28.43        1.6503    1   1   6        12
                56.60         17.19        1.6261    0   1   8         6
                62.17          1.70        1.4932    2   1   1        12
                63.30         13.14        1.4692    1   2   2        12
                67.72         10.75        1.3837    2   1   4        12
                70.12          2.33        1.3420    1   0  10         6
                71.06          4.03        1.3265    2   0   8         6
                71.21         10.92        1.3242    3   0   0         6
                72.52          2.02        1.3035    1   1   9        12
                80.91          2.94        1.1882    0   0  12         2
                83.45          2.70        1.1583    0   2  10         6
                84.35          5.21        1.1483    1   2   8        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.