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 Kim1_q0, untreated
      Locality: Kimito, Finland
      _database_code_amcsd 0018700

      CELL PARAMETERS:    4.7533   4.7533   9.2876   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    209.843
      Density (g/cm3):      7.948
      MAX. ABS. INTENSITY / VOLUME**2:      279.8915568    
      RIR:     11.466
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.52        100.00        3.3611    1   1   0         4
                34.58         78.31        2.5942    1   0   3         8
                37.86         23.26        2.3767    2   0   0         4
                39.58          2.83        2.2771    1   1   3         8
                52.20         57.31        1.7524    2   1   3        16
                54.61         14.13        1.6805    2   2   0         4
                59.74          5.80        1.5479    0   0   6         2
                61.71         12.93        1.5031    3   1   0         8
                66.27         14.94        1.4104    3   0   3         8
                66.50         11.45        1.4060    1   1   6         8
                72.93          5.82        1.2971    2   0   6         8
                78.93          9.48        1.2129    3   2   3        16
                80.89          3.06        1.1883    4   0   0         4
                85.24          5.84        1.1386    2   2   6         8
                86.96          2.80        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.