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 P0, P = 0.02 GPa
      _database_code_amcsd 0017561

      CELL PARAMETERS:    4.6940   4.6940  15.4300   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    294.430
      Density (g/cm3):      3.920
      MAX. ABS. INTENSITY / VOLUME**2:      47.25679769    
      RIR:      3.926
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                24.76         36.18        3.5964    0   1   2         6
                31.98        100.00        2.7982    1   0   4         6
                38.35         20.95        2.3470    1   1   0         6
                42.33         16.92        2.1352    1   1   3        12
                46.19         19.86        1.9655    2   0   2         6
                50.77         10.76        1.7982    0   2   4         6
                52.52         19.64        1.7426    0   1   8         6
                52.81         29.56        1.7336    1   1   6        12
                60.56          1.89        1.5289    2   1   1        12
                61.54         13.08        1.5069    1   2   2        12
                64.61          2.61        1.4426    1   0  10         6
                65.38         10.20        1.4274    2   1   4        12
                66.87          4.20        1.3991    2   0   8         6
                67.68          2.45        1.3844    1   1   9        12
                68.18          1.14        1.3754    1   2   5        12
                69.35         10.33        1.3550    3   0   0         6
                73.68          3.69        1.2858    0   0  12         2
                77.70          3.16        1.2290    0   2  10         6
                79.81          5.25        1.2018    1   2   8        12
                86.26          3.22        1.1277    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.