Perovskite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050456
      Liu X, Liebermann R C
      Physics and Chemistry of Minerals 20 (1993) 171-175
      X-ray powder diffraction study of CaTiO3 perovskite
      at high temperatures
      Sample: T = 1373 K

      CELL PARAMETERS:   5.408600   5.455300   7.678200   90.00000   90.00000   90.00000
      SPACE GROUP: Pbnm
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                23.13         12.97        3.8400    1   1   0
                23.15          5.24        3.8355    0   0   2
                25.91          1.62        3.4338    1   1   1
                32.74         29.25        2.7319    0   2   0
                32.96        100.00        2.7137    1   1   2
                33.15         25.75        2.6990    2   0   0
                36.83          1.01        2.4375    1   2   0
                37.10          1.07        2.4198    2   1   0
                38.71          1.46        2.3230    1   2   1
                38.92          3.01        2.3109    1   0   3
                38.98          3.14        2.3077    2   1   1
                40.49          6.07        2.2251    0   2   2
                40.83          4.99        2.2073    2   0   2
                42.42          1.05        2.1283    1   1   3
                43.96          1.34        2.0572    1   2   2
                47.29         49.27        1.9200    2   2   0
                47.35         26.27        1.9178    0   0   4
                53.00          2.54        1.7257    1   3   0
                53.30          1.80        1.7169    2   2   2
                53.34          3.01        1.7157    1   1   4
                54.44          1.90        1.6836    1   3   1
                58.59         15.02        1.5737    1   3   2
                58.76         11.59        1.5696    0   2   4
                59.02         10.53        1.5633    2   0   4
                59.11         20.72        1.5611    3   1   2
                68.64          5.54        1.3659    0   4   0
                69.16         21.54        1.3569    2   2   4
                69.59          4.48        1.3495    4   0   0
                73.79          1.84        1.2828    1   3   4
                78.38          3.57        1.2187    2   4   0
                78.73          5.19        1.2142    3   3   2
                78.82          5.14        1.2130    1   1   6
                79.06          2.76        1.2099    4   2   0
                87.61          4.74        1.1126    0   4   4
                88.51          3.69        1.1036    4   0   4
                88.51          3.69        1.1036    4   0   4
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.