Petricekite
      Bindi L, Forster H J, Grundmann G, Keutsch F N, Stanley C J
      Minerals 6 (2016) 33
      Petricekite, CuSe2, a new member of the marcasite group
      from the Predborice Deposit, Central Bohemia Region, Czech Republic
      Locality: Predborice Deposit, Central Bohemia Region, Czech Republic
      _database_code_amcsd 0020591

      CELL PARAMETERS:    4.9180   6.0010   3.5700   90.000   90.000   90.000
      SPACE GROUP: Pnnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    105.361
      Density (g/cm3):      6.866
      MAX. ABS. INTENSITY / VOLUME**2:      64.58185096    
      RIR:      3.063
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.39         10.35        3.8038    1   1   0         4
                29.10         18.05        3.0681    0   1   1         4
                29.78         18.73        3.0005    0   2   0         2
                30.95         89.52        2.8891    1   0   1         4
                34.45        100.00        2.6031    1   1   1         8
                35.03         99.03        2.5614    1   2   0         4
                36.54          6.43        2.4590    2   0   0         2
                39.61         14.18        2.2754    2   1   0         4
                43.48         21.31        2.0812    1   2   1         8
                47.38         81.95        1.9188    2   1   1         8
                47.82          6.21        1.9019    2   2   0         4
                49.17         15.25        1.8529    1   3   0         4
                51.17         32.61        1.7850    0   0   2         2
                52.43         34.79        1.7451    0   3   1         4
                54.68         19.75        1.6786    2   2   1         8
                55.91         23.50        1.6446    1   3   1         8
                56.99          1.49        1.6159    1   1   2         8
                58.35         21.47        1.5814    3   1   0         4
                59.58          4.06        1.5517    2   3   0         4
                60.34          3.83        1.5341    0   2   2         4
                61.84          2.66        1.5002    0   4   0         2
                62.33          2.82        1.4898    3   0   1         4
                63.53         26.02        1.4645    1   2   2         8
                64.44          3.76        1.4459    3   1   1         8
                64.51          1.77        1.4445    2   0   2         4
                64.81          3.83        1.4386    3   2   0         4
                66.59          4.57        1.4044    2   1   2         8
                70.58          2.97        1.3344    3   2   1         8
                72.64          2.71        1.3016    2   2   2         8
                73.70          6.92        1.2855    1   3   2         8
                74.02         11.93        1.2807    2   4   0         4
                77.66          1.45        1.2295    4   0   0         2
                79.59          2.89        1.2045    4   1   0         4
                80.36          1.95        1.1948    3   3   1         8
                81.28         12.66        1.1837    3   1   2         8
                82.34          2.47        1.1711    2   3   2         8
                82.78          2.58        1.1660    1   5   0         4
                83.60          3.06        1.1566    1   0   3         4
                84.33          1.69        1.1485    0   4   2         4
                85.32          7.25        1.1376    0   5   1         4
                85.50          4.25        1.1357    1   1   3         8
                86.98          2.66        1.1201    3   2   2         8
                88.14          3.20        1.1084    1   5   1         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.