Paramontroseite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050391
      Evans H T, Mrose M E
      American Mineralogist 40 (1955) 861-875
      A crystal chemical study of montroseite and paramontroseite.

      CELL PARAMETERS:   4.900900   9.383853   2.907986   90.00000   90.00000   90.00000
      SPACE GROUP: Pbnm
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                18.90          8.29        4.6919    0   2   0
                20.43        100.00        4.3441    1   1   0
                26.28         38.06        3.3892    1   2   0
                33.98         39.81        2.6367    1   3   0
                35.88          8.70        2.5009    1   0   1
                36.32         38.22        2.4717    0   2   1
                36.65          1.09        2.4505    2   0   0
                37.18         15.67        2.4165    1   1   1
                37.92          6.69        2.3709    2   1   0
                38.34          1.77        2.3460    0   4   0
                40.86         26.97        2.2069    1   2   1
                41.54          7.21        2.1721    2   2   0
                46.45         14.95        1.9533    1   3   1
                47.07          9.66        1.9290    2   3   0
                49.57          8.26        1.8376    2   1   1
                49.91          2.91        1.8259    0   4   1
                52.55          5.81        1.7402    2   2   1
                53.52          8.23        1.7110    1   4   1
                54.08          4.24        1.6946    2   4   0
                57.27         17.09        1.6075    2   3   1
                59.02          1.64        1.5640    0   6   0
                59.91          5.79        1.5428    3   2   0
                61.75         14.51        1.5011    1   5   1
                62.26          7.44        1.4900    2   5   0
                63.98          7.08        1.4540    0   0   2
                65.48         11.39        1.4243    3   0   1
                67.93          3.11        1.3788    1   1   2
                68.01          4.81        1.3774    0   6   1
                70.41          2.09        1.3362    1   2   2
                73.13          1.79        1.2931    1   7   0
                74.46          3.69        1.2732    1   3   2
                76.85          1.06        1.2395    2   1   2
                83.12          1.51        1.1611    2   3   2
                85.98          1.58        1.1297    3   6   0
                86.81          1.26        1.1210    4   1   1
                89.90          1.26        1.0903    2   7   1
                89.90          1.26        1.0903    2   7   1
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.