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 Kim5_q0, untreated
      Locality: Kimito, Finland
      _database_code_amcsd 0018701

      CELL PARAMETERS:    4.7533   4.7533   9.2773   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    209.610
      Density (g/cm3):      7.957
      MAX. ABS. INTENSITY / VOLUME**2:      279.6546641    
      RIR:     11.444
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.00          1.67        4.2304    1   0   1         8
                26.52        100.00        3.3611    1   1   0         4
                34.60         78.79        2.5921    1   0   3         8
                37.86         23.16        2.3767    2   0   0         4
                39.60          2.86        2.2757    1   1   3         8
                52.22         57.30        1.7518    2   1   3        16
                54.61         14.28        1.6805    2   2   0         4
                59.81          5.78        1.5462    0   0   6         2
                61.71         13.04        1.5031    3   1   0         8
                66.28         14.88        1.4101    3   0   3         8
                66.57         11.41        1.4047    1   1   6         8
                73.00          5.79        1.2961    2   0   6         8
                78.94          9.53        1.2127    3   2   3        16
                80.89          3.11        1.1883    4   0   0         4
                85.30          5.87        1.1379    2   2   6         8
                86.96          2.78        1.1204    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.