Ianbruceite
      Cooper M A, Abdu Y A, Ball N A, Hawthorne F C, Back M E, Tait K T, Schluter J,
      Malcherek T, Pohl D, Gebhard G
      Mineralogical Magazine 76 (2012) 1119-1131
      Ianbruceite, ideally [Zn2(OH)(H2O)(AsO4)](H2O)2, a new arsenate mineral from
      the Tsumeb mine, Otjikoto (Oshikoto) region, Namibia: description and crystal structure
      Locality: Tsumeb mine, Namibia
      _database_code_amcsd 0019546

      CELL PARAMETERS:   11.7930   9.1138   6.8265   90.000  103.859   90.000
      SPACE GROUP: P2_1/c    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    712.346
      Density (g/cm3):      3.259
      MAX. ABS. INTENSITY / VOLUME**2:      127.2401951    
      RIR:     12.713
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.72        100.00       11.4497    1   0   0         2
                23.31          5.88        3.8166    3   0   0         2
                23.92          1.18        3.7207   -1   2   1         4
                26.90          1.04        3.3139    0   0   2         2
                27.69          3.90        3.2221   -2   0   2         2
                27.95          5.11        3.1927   -1   1   2         4
                28.66          7.63        3.1144    0   1   2         4
                29.40          1.44        3.0379   -2   1   2         4
                30.44          9.52        2.9363    1   3   0         4
                31.25          6.69        2.8624    4   0   0         2
                33.39          4.86        2.6835    2   3   0         4
                34.08          3.66        2.6309   -2   2   2         4
                35.86          2.63        2.5041    1   2   2         4
                37.07          2.30        2.4254   -3   2   2         4
                37.85          1.78        2.3769    3   3   0         4
                39.35          2.87        2.2899    5   0   0         2
                39.80          1.22        2.2647    2   2   2         4
                43.46          1.23        2.0821   -5   1   2         4
                47.75          1.44        1.9047    4   1   2         4
                53.98          1.72        1.6985   -1   0   4         2
                56.99          1.64        1.6159    6   3   0         4
                57.32          1.32        1.6074   -1   5   2         4
                57.72          1.33        1.5971    0   5   2         4
                63.47          1.04        1.4657   -3   3   4         4
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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.