Epididymite-potassian
      Naumova I S, Pobedimskaya E A, Pushcharovskii D Y, Belov N V
      Altukhova Yu N
      Doklady Akademii Nauk SSSR 229 (1976) 856-859
      Crystal structure of synthetic K2Be2Si6O15 of the epidimite group
      Locality: synthetic
      Note: c-cell edge altered to reproduce bond lengths
      _database_code_amcsd 0012454

      CELL PARAMETERS:    7.4850  15.4530  11.4180   90.000   90.000   90.000
      SPACE GROUP: Cmc2_1    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1320.671
      Density (g/cm3):      2.538
      MAX. ABS. INTENSITY / VOLUME**2:      9.596805899    
      RIR:      1.231
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                11.45          1.22        7.7265    0   2   0         2
                13.14          9.22        6.7364    1   1   0         4
                15.27          2.27        5.8019    1   1   1         4
                15.52          3.56        5.7090    0   0   2         1
                19.33         31.96        4.5916    0   2   2         2
                20.39         31.21        4.3553    1   1   2         4
                22.35         25.15        3.9775    1   3   1         4
                24.32        100.00        3.6595    0   4   1         2
                26.10          2.48        3.4142    0   2   3         2
                26.17          7.32        3.4056    1   3   2         4
                26.91         11.19        3.3137    1   1   3         4
                27.61         32.54        3.2306    2   2   1         4
                28.52         49.09        3.1299    2   0   2         2
                30.82         61.53        2.9009    2   2   2         4
                31.31          1.35        2.8567    1   5   0         4
                31.58         15.82        2.8333    1   3   3         4
                32.30         10.85        2.7712    1   5   1         4
                33.04          3.40        2.7113    0   4   3         2
                33.33          4.29        2.6880    2   4   0         4
                33.47         13.58        2.6776    0   2   4         2
                34.11         18.32        2.6283    1   1   4         4
                34.27          1.07        2.6165    2   4   1         4
                34.83          4.13        2.5755    0   6   0         2
                35.13          2.76        2.5547    1   5   2         4
                35.59          9.01        2.5223    2   2   3         4
                35.74          2.70        2.5124    0   6   1         2
                36.48          1.20        2.4631    3   1   0         4
                36.96          3.56        2.4319    2   4   2         4
                37.35          1.06        2.4077    3   1   1         4
                37.99          2.70        2.3685    1   3   4         4
                39.44          1.61        2.2847    1   5   3         4
                39.71          7.11        2.2697    2   0   4         2
                40.16          1.20        2.2455    3   3   0         4
                40.96          7.22        2.2033    3   3   1         4
                41.47          3.69        2.1777    2   2   4         4
                41.77          2.92        2.1627    1   1   5         4
                42.37          7.48        2.1330    0   6   3         2
                42.70          4.06        2.1174    1   7   0         4
                44.89          3.10        2.0192    1   5   4         4
                45.09          6.96        2.0109    1   3   5         4
                45.62          3.92        1.9888    2   6   2         4
                45.70          3.13        1.9853    1   7   2         4
                46.40          1.36        1.9569    2   4   4         4
                46.98          1.79        1.9340    3   3   3         4
                47.04          3.12        1.9316    0   8   0         2
                47.51          3.15        1.9139    3   5   1         4
                47.55          2.87        1.9122    0   6   4         2
                47.80          1.14        1.9030    0   0   6         1
                48.14          1.84        1.8901    2   2   5         4
                48.66         14.67        1.8713    4   0   0         2
                48.84          2.77        1.8648    3   1   4         4
                49.16          6.13        1.8532    2   6   3         4
                49.25          1.44        1.8503    1   7   3         4
                49.32          1.02        1.8478    0   2   6         2
                49.60          2.05        1.8380    3   5   2         4
                49.79          1.54        1.8313    1   1   6         4
                51.80          4.06        1.7649    3   3   4         4
                53.38          1.20        1.7165    2   8   0         4
                53.64          5.69        1.7087    0   6   5         2
                53.84          1.25        1.7028    2   6   4         4
                53.91          2.78        1.7006    1   7   4         4
                54.02          2.14        1.6974    2   8   1         4
                54.82          2.85        1.6746    3   1   5         4
                54.86          2.27        1.6735    1   9   0         4
                55.13          3.66        1.6661    4   4   1         4
                55.46          1.61        1.6568    2   2   6         4
                56.04          1.91        1.6410    4   2   3         4
                56.22          1.16        1.6362    3   7   1         4
                57.38          2.60        1.6060    1   9   2         4
                57.57          2.68        1.6011    3   3   5         4
                57.77          1.27        1.5960    0   2   7         2
                58.08          5.41        1.5881    3   7   2         4
                59.04          1.49        1.5647    2   8   3         4
                59.47          4.43        1.5543    2   6   5         4
                59.52          3.10        1.5532    2   4   6         4
                60.35          3.78        1.5338    4   2   4         4
                60.45          1.19        1.5313    0  10   1         2
                61.58          4.81        1.5059    3   1   6         4
                61.73          4.16        1.5027    0   4   7         2
                62.24          3.64        1.4916    0  10   2         2
                62.83          2.09        1.4791    3   5   5         4
                64.65          2.91        1.4417    5   1   2         4
                65.15          1.26        1.4318    0  10   3         2
                65.44          1.12        1.4263    5   3   1         4
                65.94          1.14        1.4166    2   6   6         4
                66.05          2.10        1.4144    3   9   0         4
                66.47          2.46        1.4067    4   6   3         4
                67.15          1.56        1.3940    5   3   2         4
                67.61          1.82        1.3856    2  10   2         4
                68.03          1.03        1.3780    0   6   7         2
                69.12          1.15        1.3590    3   5   6         4
                69.12          1.81        1.3589    0  10   4         2
                69.32          1.29        1.3556    0   8   6         2
                69.96          3.42        1.3448    5   3   3         4
                70.31          1.28        1.3388    0   4   8         2
                70.40          1.50        1.3374    4   6   4         4
                70.63          1.43        1.3336    2   0   8         2
                71.41          2.56        1.3209    5   1   4         4
                71.84          1.05        1.3141    2   2   8         4
                73.19          2.87        1.2931    2   6   7         4
                73.55          1.37        1.2878    0  12   0         2
                74.25          2.38        1.2773    2  10   4         4
                74.43          1.43        1.2746    2   8   6         4
                74.93          1.87        1.2674    3   9   4         4
                75.32          3.59        1.2618    4   6   5         4
                76.24          1.25        1.2488    3   5   7         4
                76.31          1.66        1.2479    5   1   5         4
                76.34          1.11        1.2475    6   0   0         2
                76.43          1.40        1.2462    0   8   7         2
                76.96          1.59        1.2390    5   7   0         4
                78.48          1.37        1.2187    6   0   2         2
                78.51          1.41        1.2184    5   5   4         4
                79.09          1.82        1.2108    2  12   1         4
                80.68          1.78        1.1909    2  12   2         4
                81.29          1.13        1.1835    1   7   8         4
                81.38          1.66        1.1824    2   8   7         4
                81.52          1.93        1.1808    6   4   1         4
                82.29          2.06        1.1717    4   4   7         4
                82.74          1.40        1.1664    4  10   2         4
                82.84          1.32        1.1653    3  11   3         4
                84.43          4.59        1.1473    2   4   9         4
                84.89          1.13        1.1424    2  10   6         4
                85.42          1.14        1.1365    5   7   4         4
                88.28          1.64        1.1069    5   9   2         4
                88.52          1.46        1.1046    3   3   9         4
                89.03          1.67        1.0996    4  10   4         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.