Fluorcalciobritholite
      Pekov I V, Pasero M, Yaskovskaya A N, Chukanov N V, Pushcharovsky D Y,
      Merlino S, Zubkova N V, Kononkova N N, Men'shikov Y P, Zadov A E
      European Journal of Mineralogy 19 (2007) 95-103
      Fluorcalciobritholite, (Ca,REE)5[(Si,P)O4]3F, a new mineral: description and
      crystal chemistry
      Locality: Mount Kukisvumchorr, Khibiny alkaline complex, Kola Peninsula, Russia
      _database_code_amcsd 0007198

      CELL PARAMETERS:    9.5800   9.5800   6.9850   90.000   90.000  120.000
      SPACE GROUP: P6_3/m    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    555.173
      Density (g/cm3):      4.122
      MAX. ABS. INTENSITY / VOLUME**2:      34.20238159    
      RIR:      2.702
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.42         19.31        4.1483    2   0   0         6
                22.51          6.94        3.9504    1   1   1        12
                25.50         21.68        3.4925    0   0   2         2
                27.71         25.84        3.2189    1   0   2        12
                28.46          6.76        3.1358    2   1   0         6
                28.46         20.31        3.1358    1   2   0         6
                31.27         65.14        2.8607    1   2   1        12
                31.27         34.86        2.8607    2   1   1        12
                31.71         50.86        2.8220    1   1   2        12
                32.37         41.04        2.7655    3   0   0         6
                33.54          7.25        2.6717    2   0   2        12
                39.15          2.67        2.3010    1   3   0         6
                39.15          7.06        2.3010    3   1   0         6
                39.79          1.87        2.2655    2   2   1        12
                41.66          2.42        2.1681    3   0   2        12
                43.20          7.28        2.0941    1   1   3        12
                43.64          3.14        2.0741    4   0   0         6
                44.63          1.64        2.0304    2   0   3        12
                45.95         24.66        1.9752    2   2   2        12
                47.31          4.19        1.9215    1   3   2        12
                47.31          9.39        1.9215    3   1   2        12
                47.79          1.04        1.9034    2   3   0         6
                47.79          2.87        1.9034    3   2   0         6
                48.71          8.87        1.8694    2   1   3        12
                48.71         18.20        1.8694    1   2   3        12
                49.64          9.05        1.8364    2   3   1        12
                49.64          6.05        1.8364    3   2   1        12
                50.40          5.65        1.8104    1   4   0         6
                50.40          9.07        1.8104    4   1   0         6
                51.23         17.93        1.7833    4   0   2        12
                52.40         10.84        1.7463    0   0   4         2
                54.94          1.61        1.6713    2   3   2        12
                57.24          1.07        1.6095    2   0   4        12
                58.90          2.86        1.5679    4   2   0         6
                59.38          4.54        1.5565    3   3   1        12
                60.70          2.60        1.5256    2   1   4        12
                60.70          2.37        1.5256    1   2   4        12
                61.91          7.14        1.4988    5   0   2        12
                62.31          1.25        1.4901    1   5   0         6
                62.95          5.74        1.4765    3   0   4        12
                63.09          4.02        1.4736    2   3   3        12
                63.09          1.07        1.4736    3   2   3        12
                63.88          3.50        1.4573    1   5   1        12
                64.13          3.57        1.4521    3   3   2        12
                70.32          1.53        1.3387    3   4   1        12
                70.94          1.09        1.3285    2   5   0         6
                71.67          1.09        1.3168    3   3   3        12
                72.41          1.36        1.3051    5   2   1        12
                72.41          1.11        1.3051    2   5   1        12
                73.69          1.78        1.2857    6   0   2        12
                74.33          2.47        1.2761    1   2   5        12
                74.33          1.49        1.2761    2   1   5        12
                75.08          1.05        1.2652    1   6   0         6
                75.67          1.96        1.2569    1   4   4        12
                75.67          3.88        1.2569    4   1   4        12
                75.79          1.84        1.2551    1   5   3        12
                76.76          1.04        1.2417    2   5   2        12
                76.76          3.78        1.2417    5   2   2        12
                81.85          1.07        1.1769    3   4   3        12
                82.72          1.23        1.1666    4   2   4        12
                82.72          1.08        1.1666    2   4   4        12
                85.71          1.07        1.1335    1   5   4        12
                85.92          2.02        1.1312    1   1   6        12
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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.