Augite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R061086
      Gualtieri A F
      Journal of Applied Crystallography 33 (2000) 267-278
      Accuracy of XRPD QPA using the combined Rietveld-RIR method
      Locality: Napoli, Italy

      CELL PARAMETERS:   9.750400   8.901500   5.274400   90.00000   106.0160   90.00000
      SPACE GROUP: C2/c
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                13.75          2.32        6.4486    1   1   0
                18.97          3.59        4.6810    2   0   0
                19.97          6.32        4.4477    0   2   0
                26.68          5.12        3.3423    0   2   1
                27.67         34.90        3.2243    2   2   0
                29.87        100.00        2.9911   -2   2   1
                30.35         41.58        2.9447    3   1   0
                30.87         25.80        2.8963   -3   1   1
                35.03         36.05        2.5614   -1   3   1
                35.44         35.85        2.5329    0   0   2
                35.75         38.25        2.5114    2   2   1
                38.46          1.08        2.3405    4   0   0
                39.20         10.68        2.2980    3   1   1
                40.67          8.52        2.2178    1   1   2
                40.88          1.10        2.2071   -2   2   2
                41.00          4.75        2.2010    0   2   2
                42.02          9.61        2.1495    3   3   0
                42.42         18.52        2.1305   -3   3   1
                42.92         11.22        2.1068   -4   2   1
                44.48         15.43        2.0363    0   4   1
                44.84         12.54        2.0208   -4   0   2
                45.17          9.12        2.0069    2   0   2
                46.06          4.32        1.9701   -1   3   2
                46.60          1.34        1.9484   -2   4   1
                49.75          5.49        1.8322    5   1   0
                49.83          3.52        1.8293    2   2   2
                50.33          2.65        1.8125    1   3   2
                50.84          1.44        1.7955    2   4   1
                51.59          1.53        1.7710    4   2   1
                52.33         13.00        1.7478    1   5   0
                53.52          1.67        1.7116    3   1   2
                54.63          1.18        1.6792   -1   5   1
                54.92          3.56        1.6711    0   4   2
                55.15          3.24        1.6648   -3   1   3
                56.46         15.74        1.6292   -2   2   3
                56.68         14.74        1.6233   -5   3   1
                57.11          2.34        1.6122    4   4   0
                59.19          3.53        1.5603    6   0   0
                59.81          4.57        1.5456    3   5   0
                60.41          3.61        1.5316   -6   0   2
                60.71          2.01        1.5248   -6   2   1
                60.86          6.68        1.5215    4   0   2
                61.54         10.31        1.5062   -1   3   3
                62.63          4.29        1.4826    0   6   0
                63.82          1.09        1.4579    4   4   1
                64.30          1.73        1.4481   -6   2   2
                65.76         16.41        1.4193    5   3   1
                66.35          7.27        1.4081   -3   5   2
                66.52          2.84        1.4050    1   5   2
                66.84          1.87        1.3990    1   3   3
                67.30          3.36        1.3907    2   2   3
                68.13          1.64        1.3757   -2   4   3
                69.91          1.01        1.3448    0   4   3
                70.64          1.01        1.3328    2   6   1
                70.71          5.22        1.3317   -7   1   2
                71.18          2.51        1.3240    6   2   1
                71.45          3.73        1.3196   -5   3   3
                73.18          3.52        1.2926   -3   1   4
                73.98          1.57        1.2807   -2   6   2
                74.06          4.67        1.2795    0   6   2
                74.63          1.90        1.2711   -4   0   4
                74.95          2.75        1.2664    0   0   4
                76.43          6.44        1.2455    3   5   2
                78.99          1.30        1.2115    1   7   1
                83.96          2.06        1.1519   -6   0   4
                83.96          2.06        1.1519   -6   0   4
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.