Phlogopite
      Laurora A, Brigatti M F, Mottana A, Malferrari D, Caprilli E
      American Mineralogist 92 (2007) 468-480
      Crystal chemistry of trioctahedral micas in alkaline and subalkaline volcanic
      rocks: A case study from Mt. Sassetto (Tolfa district, Latium, central Italy)
      Locality: Mt. Sassetto, Tolfa district, Latium, Italy
      Sample: MS1
      Note: 2M_1 polytype
      _database_code_amcsd 0004291

      CELL PARAMETERS:    5.3332   9.2376  20.0690   90.000   95.125   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    984.766
      Density (g/cm3):      3.089
      MAX. ABS. INTENSITY / VOLUME**2:      18.16902061    
      RIR:      1.915
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.85        100.00        9.9944    0   0   2         2
                17.75          1.16        4.9972    0   0   4         2
                19.28          6.46        4.6048    1   1   0         4
                19.44          1.94        4.5653   -1   1   1         4
                19.73          3.39        4.5002    0   2   1         4
                21.87          1.37        4.0644    1   1   2         4
                22.61          1.52        3.9333   -1   1   3         4
                23.44          8.62        3.7959    0   2   3         4
                24.33          4.29        3.6580    1   1   3         4
                25.26         16.44        3.5251   -1   1   4         4
                26.27          5.98        3.3919    0   2   4         4
                26.76         31.84        3.3315    0   0   6         2
                27.33         17.98        3.2628    1   1   4         4
                28.41          5.43        3.1417   -1   1   5         4
                29.55         13.60        3.0227    0   2   5         4
                30.73          3.48        2.9094    1   1   5         4
                31.91          7.30        2.8042   -1   1   6         4
                33.16          1.65        2.7020    0   2   6         4
                33.74          1.70        2.6563   -1   3   1         4
                34.15         17.70        2.6257   -2   0   2         2
                34.15         35.37        2.6253    1   3   1         4
                34.43          3.01        2.6050    1   1   6         4
                35.94          4.45        2.4986    0   0   8         2
                36.88         11.85        2.4372   -2   0   4         2
                36.90         23.83        2.4363    1   3   3         4
                37.01          1.06        2.4288    0   2   7         4
                39.03          1.54        2.3077   -2   2   1         4
                39.27          1.85        2.2941    0   4   1         4
                39.75          2.38        2.2674    2   2   1         4
                39.81          5.67        2.2642   -1   3   5         4
                39.83          2.78        2.2630    2   0   4         2
                40.45          2.32        2.2301   -2   2   3         4
                41.38          1.51        2.1820    0   4   3         4
                41.55          8.28        2.1735   -2   0   6         2
                41.57         16.46        2.1724    1   3   5         4
                45.37          2.80        1.9989    0   0  10         2
                45.51          8.04        1.9930   -1   3   7         4
                45.54          3.95        1.9918    2   0   6         2
                47.69          1.84        1.9069   -2   0   8         2
                47.72          3.67        1.9058    1   3   7         4
                54.34          1.26        1.6884    3   1   2         4
                54.97          7.00        1.6704   -2   0  10         2
                55.00         14.19        1.6695    1   3   9         4
                55.14          1.15        1.6657    0   0  12         2
                55.25          1.65        1.6627   -1   5   4         4
                56.34          1.47        1.6330   -2   4   5         4
                56.36          1.17        1.6326    1   5   4         4
                57.60          1.35        1.6003   -3   1   6         4
                57.63          1.13        1.5994    3   1   4         4
                60.10          6.99        1.5396    0   6   0         2
                60.10         13.93        1.5396   -3   3   1         4
                60.36          7.78        1.5335   -1   3  11         4
                60.40          3.85        1.5327    2   0  10         2
                60.87          2.45        1.5218   -3   3   3         4
                60.88          2.49        1.5217    0   6   2         4
                60.89          2.46        1.5215    3   3   1         4
                63.22          1.62        1.4708    1   3  11         4
                65.36          1.20        1.4278    0   0  14         2
                69.16          6.81        1.3583   -1   3  13         4
                69.20          3.38        1.3576    2   0  12         2
                70.73          1.10        1.3320    2   6   0         4
                70.97          4.64        1.3281   -2   6   2         4
                70.97          2.31        1.3280    4   0   0         2
                72.03          2.20        1.3111   -3   3   9         4
                72.05          2.21        1.3107    0   6   8         4
                72.08          2.21        1.3103    3   3   7         4
                72.64          3.25        1.3016   -2   6   4         4
                72.66          1.58        1.3013    4   0   2         2
                74.52          1.06        1.2733   -4   0   6         2
                74.55          2.12        1.2729    2   6   4         4
                85.84          3.42        1.1321   -2   6  10         4
                85.89          1.69        1.1315    4   0   8         2
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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.