Carpathite
Diffraction data computed using the structure from the paper listed below, 
along with the cell parameters refined from the powder pattern of R060660
      Fawcett J K, Trotter J
      Proceedings of the Royal Society of London A289 (1966) 366-376
      The crystal and molecular structure of coronene
      Locality: synthetic

      CELL PARAMETERS:  16.0500  4.6790 10.0400   90.000  110.930   90.000
      SPACE GROUP: P2_1/a    

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            C     -0.12010  -0.40790   0.03810     1.000     5.493
            C     -0.11220  -0.47880   0.17820     1.000     6.688
            C     -0.04970  -0.36000   0.29130     1.000     6.636
            C      0.01210  -0.16070   0.27860     1.000     5.636
            C      0.07990  -0.03390   0.39410     1.000     6.435
            C      0.13640   0.15550   0.37610     1.000     6.603
            C      0.13390   0.24440   0.24100     1.000     5.541
            C      0.19090   0.44900   0.21670     1.000     6.514
            C      0.18430   0.52860   0.08470     1.000     6.734
            C     -0.06060  -0.20290   0.01830     1.000     4.786
            C      0.00570  -0.08230   0.13800     1.000     4.749
            C      0.06660   0.12100   0.12060     1.000     4.686
            H     -0.15740  -0.63380   0.19460     1.000     5.300
            H     -0.04440  -0.42140   0.39400     1.000     5.300
            H      0.08270  -0.09550   0.49550     1.000     4.900
            H      0.18760   0.24620   0.46470     1.000     5.000
            H      0.24060   0.54400   0.30840     1.000     4.700
            H      0.22830   0.68480   0.06960     1.000     5.800

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/- 13 +/-  4 +/-  8
            MAX. ABS. INTENSITY / VOLUME**2:      4.244196388    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                 9.43        100.00        9.3775    0   0   1
                11.81         75.64        7.4955    2   0   0
                12.20         45.05        7.2536   -2   0   1
                17.59          8.34        5.0421    2   0   1
                18.39          6.44        4.8249   -2   0   2
                18.93          6.20        4.6888    0   0   2
                19.88          2.68        4.4665    1   1   0
                22.18          4.14        4.0084   -4   0   1
                22.40         40.08        3.9691    2   1   0
                22.61         23.84        3.9319   -2   1   1
                22.95          4.24        3.8755    1   1   1
                23.74          4.07        3.7477    4   0   0
                24.55          2.37        3.6268   -4   0   2
                25.48         78.79        3.4954   -3   1   1
                25.98          1.92        3.4297    2   1   1
                26.09         23.89        3.4154    3   1   0
                26.54          1.89        3.3589   -2   1   2
                26.69          2.53        3.3398   -2   0   3
                28.63          1.38        3.1174    4   0   1
                29.04          2.38        3.0747    1   1   2
                29.34         24.94        3.0441   -4   1   1
                30.56          1.78        2.9251    4   1   0
                33.88          3.08        2.6455   -5   1   1
                39.31          1.12        2.2919   -6   1   2
                39.95          1.47        2.2570    2   1   3
                41.56          1.78        2.1732   -1   1   4
                43.16          1.18        2.0960    0   1   4
                43.77          1.66        2.0681    3   1   3
                44.19          2.37        2.0496   -7   1   2
                45.71          2.66        1.9848   -4   0   5
                46.92          2.02        1.9365    6   0   2
                48.14          3.04        1.8901   -5   2   1
                48.93          1.14        1.8614   -5   2   2
                52.04          1.89        1.7574   -6   2   1
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.