Cacoxenite
      Moore P B, Shen J
      Nature 306 (1983) 356-358
      An X-ray structural study of cacoxenite, a mineral phosphate
      Locality: Avant's Claim, near Shady, Polk County, Arkansas, USA
      _database_code_amcsd 0014677

      CELL PARAMETERS:   27.5590  27.5590  10.5500   90.000   90.000  120.000
      SPACE GROUP: P6_3/m    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   6939.209
      Density (g/cm3):      1.755
      MAX. ABS. INTENSITY / VOLUME**2:      293.4377543    
      RIR:     54.443
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 3.70        100.00       23.8668    1   0   0         6
                 6.41          1.38       13.7795    1   1   0         6
                 7.41          7.18       11.9334    2   0   0         6
                12.91          1.03        6.8562    1   2   1        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.