Tapiolite-(Fe)
      Zema M, Tarantino S C, Giorgiani A
      Mineralogical Magazine 70 (2006) 319-328
      Structural changes induced by cation ordering in ferrotapiolite
      Note: Crystal Kim9_q2, treated at 750 C for 120 min
      Locality: Kimito, Finland
      _database_code_amcsd 0018705

      CELL PARAMETERS:    4.7497   4.7497   9.2530   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    208.744
      Density (g/cm3):      7.992
      MAX. ABS. INTENSITY / VOLUME**2:      281.5255775    
      RIR:     11.470
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.02          1.59        4.2255    1   0   1         8
                26.54        100.00        3.3585    1   1   0         4
                34.68         78.52        2.5868    1   0   3         8
                37.88         23.16        2.3749    2   0   0         4
                39.68          2.85        2.2717    1   1   3         8
                52.29         57.13        1.7494    2   1   3        16
                54.66         14.27        1.6793    2   2   0         4
                59.99          5.73        1.5422    0   0   6         2
                61.76         13.04        1.5020    3   1   0         8
                66.37         14.83        1.4085    3   0   3         8
                66.74         11.32        1.4015    1   1   6         8
                73.17          5.76        1.2934    2   0   6         8
                79.04          9.51        1.2115    3   2   3        16
                80.97          3.11        1.1874    4   0   0         4
                85.49          5.84        1.1359    2   2   6         8
                87.04          2.78        1.1195    3   3   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.