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 Kim20_q1, treated at 600 C for 5 min
      Locality: Kimito, Finland
      _database_code_amcsd 0018713

      CELL PARAMETERS:    4.7547   4.7547   9.2893   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    210.005
      Density (g/cm3):      7.944
      MAX. ABS. INTENSITY / VOLUME**2:      278.7715979    
      RIR:     11.426
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.51        100.00        3.3621    1   1   0         4
                34.57         79.11        2.5947    1   0   3         8
                37.84         23.15        2.3774    2   0   0         4
                39.57          2.88        2.2776    1   1   3         8
                52.18         57.42        1.7529    2   1   3        16
                54.59         14.31        1.6810    2   2   0         4
                59.73          5.81        1.5482    0   0   6         2
                61.69         13.07        1.5036    3   1   0         8
                66.24         14.90        1.4108    3   0   3         8
                66.49         11.46        1.4063    1   1   6         8
                72.91          5.81        1.2974    2   0   6         8
                78.90          9.54        1.2133    3   2   3        16
                80.87          3.12        1.1887    4   0   0         4
                85.21          5.90        1.1388    2   2   6         8
                86.93          2.78        1.1207    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.