Alpersite
      Peterson R C, Hammarstrom J M, Seal R R
      American Mineralogist 91 (2006) 261-269
      Alpersite (Mg,Cu)SO4*7H2O, a new mineral of the melanterite group, and cuprian
      pentahydrite: Their occurrence within mine waste
      Locality: Miami, Arizona, USA
      _database_code_amcsd 0004015

      CELL PARAMETERS:   14.1890   6.5470  10.8300   90.000  105.872   90.000
      SPACE GROUP: P2_1/c    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    967.701
      Density (g/cm3):      1.915
      MAX. ABS. INTENSITY / VOLUME**2:      7.120404394    
      RIR:      1.210
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 6.48          6.76       13.6480    1   0   0         2
                12.97          5.29        6.8240    2   0   0         2
                15.01          2.71        5.9030    1   1   0         4
                15.99         17.83        5.5431    0   1   1         4
                16.36          2.25        5.4180   -1   1   1         4
                16.47          9.15        5.3811   -1   0   2         2
                17.02          5.36        5.2086    0   0   2         2
                18.13        100.00        4.8934    1   1   1         4
                18.39         49.72        4.8255   -2   0   2         2
                19.51          2.61        4.5493    3   0   0         2
                19.84         16.69        4.4755    1   0   2         2
                22.08          6.40        4.0254    2   1   1         4
                22.15          1.78        4.0130   -3   0   2         2
                22.89          1.32        3.8844   -2   1   2         4
                23.42         66.65        3.7981   -3   1   1         4
                24.17         17.25        3.6829    2   0   2         2
                26.12          2.59        3.4120    4   0   0         2
                27.11          1.46        3.2897    3   1   1         4
                27.24         20.86        3.2735    0   2   0         2
                28.23          8.61        3.1608   -1   1   3         4
                28.58          3.90        3.1229    0   2   1         4
                28.66          4.36        3.1151   -4   1   1         4
                28.80          2.56        3.1000   -1   2   1         4
                28.88         14.58        3.0911   -2   1   3         4
                29.39          5.98        3.0392    3   0   2         2
                29.52         10.98        3.0258    4   1   0         4
                30.35          9.43        2.9449   -4   1   2         4
                32.00          8.63        2.7967   -1   2   2         4
                32.48          7.96        2.7567    3   1   2         4
                32.49          1.61        2.7555    2   2   1         4
                32.61          1.72        2.7461   -5   0   2         2
                32.76         24.16        2.7335    4   1   1         4
                33.21         11.87        2.6976   -1   0   4         2
                33.73         11.26        2.6571    3   2   0         4
                33.93         13.50        2.6422    1   2   2         4
                34.26          8.86        2.6171   -4   1   3         4
                34.44          1.52        2.6043    0   0   4         2
                34.70          4.68        2.5855   -3   0   4         2
                35.16          1.47        2.5521    4   0   2         2
                35.39          1.69        2.5366   -3   2   2         4
                35.45          1.99        2.5324   -5   1   2         4
                35.64          4.17        2.5194    5   1   0         4
                36.01          1.43        2.4941   -1   1   4         4
                36.20          4.99        2.4815    3   2   1         4
                36.86          7.23        2.4383    1   0   4         2
                37.08          1.38        2.4248   -1   2   3         4
                37.27          1.52        2.4127   -4   0   4         2
                37.40          5.89        2.4048   -3   1   4         4
                37.41          2.92        2.4039   -4   2   1         4
                37.77          6.10        2.3819    0   2   3         4
                38.62          2.72        2.3315   -6   0   2         2
                38.76          2.10        2.3231   -4   2   2         4
                38.84          2.85        2.3187    5   1   1         4
                39.27          1.45        2.2945   -3   2   3         4
                40.50          1.79        2.2273    3   2   2         4
                40.83          1.91        2.2102   -5   0   4         2
                41.10          5.45        2.1964   -6   1   2         4
                42.05          1.02        2.1487    6   1   0         4
                43.24          2.24        2.0924    1   3   1         4
                44.36          2.62        2.0419   -1   1   5         4
                44.82          6.32        2.0223   -1   3   2         4
                45.04          3.91        2.0127    4   2   2         4
                45.19          2.86        2.0065   -6   0   4         2
                45.24          2.26        2.0044    6   1   1         4
                45.62          1.14        1.9884   -2   3   2         4
                45.70          5.10        1.9853    0   1   5         4
                45.91         15.18        1.9766   -3   3   1         4
                46.58          1.13        1.9497    7   0   0         2
                46.77          1.60        1.9422   -4   2   4         4
                46.79          1.02        1.9416    3   1   4         4
                47.11          1.23        1.9292   -7   1   1         4
                47.39          1.71        1.9184   -6   1   4         4
                47.90          2.84        1.8991   -6   2   2         4
                48.00          3.98        1.8955    1   1   5         4
                48.06          3.83        1.8931    3   3   1         4
                48.73          1.55        1.8686    7   1   0         4
                48.75          2.15        1.8680    6   2   0         4
                48.93          2.36        1.8617   -7   1   3         4
                49.21          2.64        1.8514   -5   1   5         4
                49.33          5.10        1.8474    2   2   4         4
                49.50          1.38        1.8415    4   0   4         2
                49.79          2.59        1.8313    5   1   3         4
                50.54          1.40        1.8060   -3   3   3         4
                50.58          1.55        1.8046   -2   0   6         2
                50.91          4.55        1.7937   -3   0   6         2
                51.75          2.34        1.7665    4   3   1         4
                51.93          3.41        1.7608    7   1   1         4
                52.17          1.39        1.7533   -4   0   6         2
                53.57          4.00        1.7107   -6   2   4         4
                53.73          1.83        1.7060    8   0   0         2
                54.80          2.51        1.6751    7   2   0         4
                55.08          3.10        1.6673    3   1   5         4
                55.39          1.47        1.6586    4   3   2         4
                56.15          1.78        1.6382    5   3   1         4
                56.20          2.28        1.6367    0   4   0         2
                56.92          2.72        1.6177   -7   1   5         4
                58.39          1.57        1.5804   -2   2   6         4
                59.65          1.48        1.5500   -2   4   2         4
                59.84          1.31        1.5456   -4   2   6         4
                60.20          1.45        1.5372    1   4   2         4
                60.35          4.10        1.5338    0   2   6         4
                61.27          1.83        1.5129    8   2   0         4
                61.30          1.95        1.5123   -9   1   3         4
                61.70          2.54        1.5035   -3   1   7         4
                62.79          1.00        1.4800   -7   1   6         4
                62.99          1.39        1.4757    4   4   0         4
                69.38          1.15        1.3545   -4   4   4         4
                73.57          1.35        1.2875    4   2   6         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.