Potassic-arfvedsonite
      Pekov I V, Chukanov N V, Lebedeva Y S, Pushcharovsky D Y, Ferraris G, Gula A,
      Zadov A E, Novakova  A A, Petersen O V
      Neues Jahrbuch fur Mineralogie, Monatshefte 2004 (2004) 555-574
      Potassicarfvedsonite, KNa2Fe2+4Fe3+Si8O22(OH)2,a K-dominant amphibole of the
      arfvedsonite series from agpaitic pegmatites - Mineral data, structure
      refinement and disorder in the A site
      Locality: Ilimaussaq, Greenland
      _database_code_amcsd 0014932

      CELL PARAMETERS:   10.0020  18.0540   5.3190   90.000  103.900   90.000
      SPACE GROUP: C2/m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    932.358
      Density (g/cm3):      3.145
      MAX. ABS. INTENSITY / VOLUME**2:      16.37203066    
      RIR:      1.695
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 9.80         30.04        9.0270    0   2   0         2
                10.35        100.00        8.5510    1   1   0         4
                17.17          1.17        5.1632    0   0   1         2
                17.34          3.18        5.1151    1   3   0         4
                18.09          8.14        4.9027   -1   1   1         4
                18.27         39.08        4.8546    2   0   0         2
                19.67          1.03        4.5135    0   4   0         2
                20.78          4.24        4.2755    2   2   0         4
                22.87          4.87        3.8882   -1   3   1         4
                24.05          1.98        3.7000   -2   2   1         4
                26.22          7.13        3.3982    0   4   1         4
                28.01          4.54        3.1856    3   1   0         4
                28.09          1.28        3.1764    2   0   1         2
                29.25          1.81        3.0528   -3   1   1         4
                29.61          3.03        3.0170   -2   4   1         4
                29.69          1.05        3.0090    0   6   0         2
                30.34          6.24        2.9458   -1   5   1         4
                31.38          2.56        2.8503    3   3   0         4
                32.51          1.47        2.7540   -3   3   1         4
                32.83          9.52        2.7277    1   5   1         4
                34.09          2.97        2.6302   -1   1   2         4
                34.50         10.61        2.5997    0   6   1         4
                34.53          5.68        2.5976    2   4   1         4
                34.75          4.84        2.5816    0   0   2         2
                35.24          7.13        2.5471   -2   0   2         2
                36.66          1.02        2.4514   -2   2   2         4
                36.96          1.38        2.4318   -1   3   2         4
                37.04          4.13        2.4273    4   0   0         2
                37.20          6.55        2.4167   -2   6   1         4
                38.28          3.62        2.3509   -3   5   1         4
                38.50          1.53        2.3383    1   1   2         4
                39.39          3.68        2.2877   -3   1   2         4
                41.11          1.38        2.1956    1   3   2         4
                41.33          8.33        2.1845    2   6   1         4
                42.19          1.89        2.1418   -4   4   1         4
                43.48          2.59        2.0815    2   0   2         2
                44.23          4.74        2.0479    3   5   1         4
                44.68          3.95        2.0282   -4   0   2         2
                48.09          3.85        1.8920   -4   6   1         4
                49.48          1.41        1.8422    4   4   1         4
                50.49          1.26        1.8075    3   1   2         4
                50.56          1.70        1.8054    0  10   0         2
                51.92          1.37        1.7610   -5   1   2         4
                52.70          2.19        1.7368   -5   5   1         4
                54.20          2.01        1.6922    2  10   0         4
                54.77          2.81        1.6759    4   6   1         4
                56.06          1.02        1.6404   -2   4   3         4
                56.90          2.08        1.6183    1  11   0         4
                56.90          1.06        1.6182    6   0   0         2
                58.05          1.93        1.5888   -1   5   3         4
                58.08          1.28        1.5882    4   0   2         2
                59.71          1.13        1.5487   -6   0   2         2
                60.22          1.31        1.5366   -3   5   3         4
                60.52          1.26        1.5297    5   5   1         4
                60.96          2.04        1.5197   -2   6   3         4
                62.13          1.77        1.4940    0   6   3         4
                62.56          1.17        1.4847    1   5   3         4
                63.12          1.19        1.4729   -2  10   2         4
                63.99          1.75        1.4550   -6   6   1         4
                66.27          1.11        1.4103   -4   6   3         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.