Silvialite
      Teertstra D K, Schindler M, Sherriff B L, Hawthorne F C
      Mineralogical Magazine 63 (1999) 321-329
      Silvialite, a new sulfate-dominant member of the scapolite group with
      an Al-Si composition near the I4/m-P42/n phase transition
      Locality: McBride Province, Australia
      _database_code_amcsd 0014537

      CELL PARAMETERS:   12.1600  12.1600   7.5600   90.000   90.000   90.000
      SPACE GROUP: I4/m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1117.864
      Density (g/cm3):      2.758
      MAX. ABS. INTENSITY / VOLUME**2:      10.55652745    
      RIR:      1.246
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.57         10.31        6.0800    2   0   0         4
                20.11          1.65        4.4146    2   1   1         8
                20.66          1.49        4.2992    2   2   0         4
                23.13          1.52        3.8453    1   3   0         4
                23.13         33.77        3.8453    3   1   0         4
                23.54          1.22        3.7800    0   0   2         2
                24.93         16.36        3.5723    3   0   1         8
                25.75        100.00        3.4604    1   1   2         8
                27.79          1.18        3.2102    2   0   2         8
                28.99         79.18        3.0800    2   3   1         8
                29.38         34.32        3.0400    4   0   0         4
                31.21          3.25        2.8661    3   3   0         4
                31.52          4.04        2.8388    2   2   2         8
                32.59         13.08        2.7476    1   4   1         8
                32.94          5.44        2.7191    2   4   0         4
                33.24         40.92        2.6957    3   1   2         8
                33.24          1.43        2.6957    1   3   2         8
                37.72          1.64        2.3848    5   1   0         4
                38.90         10.88        2.3152    4   3   1         8
                38.90          1.64        2.3152    3   4   1         8
                40.88          3.88        2.2073    4   2   2         8
                41.75          4.36        2.1636    5   2   1         8
                41.75          5.60        2.1636    2   5   1         8
                42.03          2.30        2.1496    4   4   0         4
                42.23         12.47        2.1401    3   0   3         8
                43.39          5.23        2.0854    3   5   0         4
                44.90          4.31        2.0187    3   2   3         8
                44.90          3.69        2.0187    2   3   3         8
                44.94          3.20        2.0169    5   1   2         8
                44.94          3.05        2.0169    1   5   2         8
                47.02          8.74        1.9327    6   1   1         8
                47.02          1.89        1.9327    1   6   1         8
                47.28          8.38        1.9227    6   2   0         4
                47.45          3.42        1.9159    4   1   3         8
                47.45         13.40        1.9159    1   4   3         8
                48.15         11.26        1.8900    0   0   4         2
                49.49          2.46        1.8419    5   4   1         8
                49.49          1.27        1.8419    4   5   1         8
                49.95          3.90        1.8260    3   5   2         8
                51.87          1.77        1.7627    6   3   1         8
                51.87          2.50        1.7627    3   6   1         8
                52.28          3.11        1.7500    5   0   3         8
                53.27          2.41        1.7197    1   7   0         4
                53.27          4.63        1.7197    7   1   0         4
                53.47          2.03        1.7137    2   6   2         8
                54.41          1.94        1.6863    4   6   0         4
                56.42          3.27        1.6310    2   7   1         8
                57.41          3.40        1.6051    4   0   4         8
                58.98          7.21        1.5661    1   6   3         8
                61.10          5.18        1.5166    5   4   3         8
                62.73          2.19        1.4812    5   1   4         8
                62.83          1.65        1.4791    4   7   1         8
                63.22          3.18        1.4709    7   3   2         8
                63.22          3.26        1.4709    3   7   2         8
                63.90          2.29        1.4567    1   2   5         8
                65.09          5.40        1.4331    6   6   0         4
                65.23          3.22        1.4302    7   0   3         8
                65.94          2.88        1.4166    3   0   5         8
                66.10          2.72        1.4136    7   5   0         4
                67.25          2.04        1.3922    2   7   3         8
                67.94          8.49        1.3797    2   3   5         8
                68.27          8.90        1.3738    8   2   2         8
                68.27          6.91        1.3738    2   8   2         8
                69.09          1.27        1.3595    8   4   0         4
                69.78          2.76        1.3478    6   2   4         8
                70.07          3.35        1.3428    1   9   0         4
                70.85          1.63        1.3300    9   0   1         8
                71.19          4.77        1.3245    5   6   3         8
                71.22          1.00        1.3240    5   7   2         8
                72.79          1.28        1.2993    9   2   1         8
                73.79          2.67        1.2841    4   3   5         8
                74.11          1.32        1.2793    8   4   2         8
                74.61          1.12        1.2720    7   1   4         8
                74.61          1.39        1.2720    1   7   4         8
                75.45          1.89        1.2600    0   0   6         2
                79.48          2.75        1.2059    6   1   5         8
                81.49          1.52        1.1811    5   9   0         4
                82.59          2.20        1.1682    7   7   2         8
                83.20          1.28        1.1611    6   3   5         8
                83.51          1.38        1.1576    8   6   2         8
                84.92          1.24        1.1419    6   6   4         8
                85.06          1.27        1.1405    7   0   5         8
                85.85          1.01        1.1320    7   5   4         8
                86.29          1.53        1.1273    5   9   2         8
                89.54          1.04        1.0947    1   9   4         8
                89.95          1.84        1.0907   10   1   3         8
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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.