Pharmacosiderite
      Mills S J, Hager S L, Leverett P, Williams P A, Raudsepp M
      Mineralogical Magazine 74 (2010) 487-492
      The structure of H3O+ - exchanged pharmacosiderite
      Locality: Cornwall, England
      _database_code_amcsd 0014604

      CELL PARAMETERS:    7.9800   7.9800   7.9800   90.000   90.000   90.000
      SPACE GROUP: P-43m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    508.170
      Density (g/cm3):      2.562
      MAX. ABS. INTENSITY / VOLUME**2:      75.99071148    
      RIR:      9.658
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                11.09        100.00        7.9800    1   0   0         6
                19.26         20.48        4.6073    1   1   1         4
                22.28         10.13        3.9900    2   0   0         6
                24.95          1.79        3.5688    2   1   0        24
                27.38         19.52        3.2578    2   1   1        12
                31.71         14.59        2.8214    2   2   0        12
                33.69          3.00        2.6600    2   2   1        12
                33.69          3.53        2.6600    3   0   0         6
                35.58         11.49        2.5235    3   1   0        24
                37.38         14.09        2.4061    3   1   1        12
                39.10          3.43        2.3036    2   2   2         4
                42.38          2.03        2.1327    3   2   1        24
                45.46          1.04        1.9950    4   0   0         6
                46.95          1.98        1.9354    4   1   0        24
                48.39          3.78        1.8809    4   1   1        12
                49.81          1.84        1.8307    3   3   1        12
                51.19          5.36        1.7844    4   2   0        24
                52.55          2.25        1.7414    4   2   1        24
                53.89          1.07        1.7013    3   3   2        12
                56.49          3.65        1.6289    4   2   2        12
                57.77          5.19        1.5960    4   3   0        24
                60.26          1.62        1.5358    3   3   3         4
                60.26          2.84        1.5358    5   1   1        12
                63.89          2.45        1.4569    5   2   1        24
                66.25          5.31        1.4107    4   4   0        12
                67.42          1.97        1.3891    4   4   1        12
                68.57          1.55        1.3686    4   3   3        12
                69.71          2.80        1.3489    5   3   1        24
                87.25          1.05        1.1174    5   5   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.