Schiavinatoite
      Demartin F, Diella V, Gramaccioli C M, Pezzotta F
      European Journal of Mineralogy 13 (2001) 159-165
      Schiavinatoite, (Nb,Ta)BO4, the Nb analogue of behierite
      _database_code_amcsd 0006854

      CELL PARAMETERS:    6.2190   6.2190   5.4870   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    212.215
      Density (g/cm3):      6.571
      MAX. ABS. INTENSITY / VOLUME**2:      159.3086365    
      RIR:      7.894
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.60        100.00        4.1145    1   0   1         8
                28.71         83.65        3.1095    2   0   0         4
                36.21         36.45        2.4807    2   1   1        16
                38.68         48.98        2.3277    1   1   2         8
                41.05         13.89        2.1987    2   2   0         4
                44.02          3.27        2.0572    2   0   2         8
                46.85         28.49        1.9392    3   0   1         8
                52.12         18.62        1.7547    1   0   3         8
                55.88         25.24        1.6455    3   2   1        16
                57.67         42.34        1.5984    3   1   2        16
                59.45         11.21        1.5547    4   0   0         4
                60.59         11.44        1.5282    2   1   3        16
                64.02          8.60        1.4544    4   1   1        16
                67.34          8.58        1.3906    4   2   0         8
                68.39          2.28        1.3717    0   0   4         2
                68.40          5.28        1.3715    3   0   3         8
                73.21         12.81        1.2929    3   3   2         8
                75.80          7.96        1.2551    2   0   4         8
                75.81          3.73        1.2549    3   2   3        16
                78.92          8.93        1.2130    4   3   1        16
                78.92          2.46        1.2130    5   0   1         8
                82.97          7.23        1.1638    2   2   4         8
                82.98          5.62        1.1637    4   1   3        16
                86.03          3.06        1.1301    5   2   1        16
                87.53          9.23        1.1145    5   1   2        16
                89.05          2.47        1.0994    4   4   0         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.