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 Kim23_q0, untreated
      Locality: Kimito, Finland
      _database_code_amcsd 0018719

      CELL PARAMETERS:    4.7551   4.7551   9.2818   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    209.871
      Density (g/cm3):      7.947
      MAX. ABS. INTENSITY / VOLUME**2:      279.0354666    
      RIR:     11.432
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.99          1.75        4.2321    1   0   1         8
                26.51        100.00        3.3624    1   1   0         4
                34.59         78.98        2.5933    1   0   3         8
                37.84         23.14        2.3775    2   0   0         4
                39.58          2.86        2.2767    1   1   3         8
                52.19         57.35        1.7525    2   1   3        16
                54.59         14.32        1.6812    2   2   0         4
                59.78          5.78        1.5470    0   0   6         2
                61.69         13.08        1.5037    3   1   0         8
                66.25         14.88        1.4107    3   0   3         8
                66.54         11.42        1.4054    1   1   6         8
                72.96          5.81        1.2967    2   0   6         8
                78.91          9.54        1.2132    3   2   3        16
                80.86          3.12        1.1888    4   0   0         4
                85.25          5.87        1.1384    2   2   6         8
                86.92          2.78        1.1208    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.