Fluorcalciopyrochlore
      Zaitsev A N, Spratt J, Shtukenberg A G, Zolotarev A A, Britvin S N,
      Petrov S V, Kuptsova A V, Antonov A V
      Mineralogical Magazine 85 (2021) 532-553
      Oscillatory- and sector-zoned pyrochlore from carbonatites of the Kerimasi
      volcano, Gregory rift, Tanzania
      Sample: LL 441
      Locality: Kisete crater, Kerimasi volcano, Gregory rift, Tanzania
      _database_code_amcsd 0021051

      CELL PARAMETERS:   10.4340  10.4340  10.4340   90.000   90.000   90.000
      SPACE GROUP: Fd-3m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1135.932
      Density (g/cm3):      4.617
      MAX. ABS. INTENSITY / VOLUME**2:      108.7025494    
      RIR:      7.666
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.70          7.98        6.0241    1   1   1         8
                28.37          6.55        3.1460    3   1   1        24
                29.66        100.00        3.0120    2   2   2         8
                34.38         22.91        2.6085    4   0   0         6
                45.15          2.75        2.0080    3   3   3         8
                49.41         45.84        1.8445    4   4   0        12
                57.96          1.00        1.5912    5   3   3        24
                58.69         35.28        1.5730    6   2   2        24
                61.58          7.95        1.5060    4   4   4         8
                63.69          1.05        1.4611    5   5   1        24
                69.16          1.45        1.3584    7   3   1        48
                72.47          5.41        1.3043    8   0   0         6
                80.20         12.14        1.1969    6   6   2        24
                82.73          9.76        1.1666    8   4   0        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.