Lawrencite
      Vettier C, Yelon W B
      Journal of Physics and Chemistry of Solids 36 (1975) 401-405
      The structure of FeCl2 at high pressures
      Note: P = 3.15 kbar
      _database_code_amcsd 0018599

      CELL PARAMETERS:    3.5920   3.5920  17.3840   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    194.246
      Density (g/cm3):      3.250
      MAX. ABS. INTENSITY / VOLUME**2:      37.28076624    
      RIR:      3.735
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.29        100.00        5.7947    0   0   3         2
                30.52         99.56        2.9288    0   1   2         6
                35.49          2.16        2.5295    1   0   4         6
                38.85         88.66        2.3183    0   1   5         6
                46.81         37.81        1.9408    1   0   7         6
                47.05          1.76        1.9316    0   0   9         2
                50.84         37.54        1.7960    1   1   0         6
                51.29          3.54        1.7814    0   1   8         6
                53.41         16.46        1.7155    1   1   3        12
                60.47          9.81        1.5311    2   0   2         6
                61.06         13.83        1.5175    1   0  10         6
                64.30          4.88        1.4487    0   0  12         2
                65.77         13.28        1.4198    2   0   5         6
                71.58          7.84        1.3182    0   2   7         6
                71.77          2.16        1.3153    1   1   9        12
                82.85          2.07        1.1651    1   2   2        12
                83.38          4.51        1.1591    0   2  10         6
                83.90          1.64        1.1532    0   1  14         6
                86.27         10.55        1.1276    1   1  12        12
                87.60          3.32        1.1138    1   2   5        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.