Oskarssonite
      Jacobsen M J, Balic-Zunic T, Mitolo D, Katerinopoulou A, Garavelli A, Jakobsson S P
      Mineralogical Magazine 78 (2014) 215-222
      Oskarssonite, AlF3, a new fumarolic mineral from Eldfell volcano, Heimaey, Iceland
      Locality: Eldfell volcano, Heimaey, Iceland
      _database_code_amcsd 0020042

      CELL PARAMETERS:    4.9817   4.9817  12.3870   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    266.227
      Density (g/cm3):      3.088
      MAX. ABS. INTENSITY / VOLUME**2:      31.14166485    
      RIR:      3.283
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.16        100.00        3.5401    0   1   2         6
                35.69          1.94        2.5158    1   0   4         6
                42.38         10.95        2.1328    1   1   3        12
                43.85          1.99        2.0645    0   0   6         2
                44.47          2.66        2.0371    2   0   2         6
                51.64         24.02        1.7700    0   2   4         6
                56.96          2.24        1.6167    2   1   1        12
                58.03         12.75        1.5895    1   1   6        12
                58.53          8.94        1.5769    1   2   2        12
                64.59          1.28        1.4428    2   1   4        12
                64.83          1.50        1.4381    3   0   0         6
                75.60          4.17        1.2579    2   0   8         6
                80.71          1.29        1.1906    1   0  10         6
                82.02          1.01        1.1748    3   1   2        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.