Andradite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from single crystal data of R060326 
      Novak G A, Gibbs G V
      American Mineralogist 56 (1971) 791-823
      The crystal chemistry of the silicate garnets
      sample An

      CELL PARAMETERS:  12.0370 12.0370 12.0370   90.000   90.000   90.000
      SPACE GROUP: Ia-3d     

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Si     0.37500   0.00000   0.25000     1.000     0.547
            Fe     0.00000   0.00000   0.00000     1.000     0.388
            Ca     0.12500   0.00000   0.25000     1.000     1.688
            O      0.03986   0.04885   0.65555     1.000     0.556

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/- 11 +/- 11 +/- 11
            MAX. ABS. INTENSITY / VOLUME**2:      22.31367850    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                20.87         26.80        4.2557    2   2   0
                29.69         78.00        3.0092    4   0   0
                33.29        100.00        2.6916    4   2   0
                34.96         10.34        2.5663    3   3   2
                36.57         79.40        2.4570    4   2   2
                38.12         16.18        2.3606    4   3   1
                41.07         12.83        2.1976    5   2   1
                46.51         10.72        1.9527    5   3   2
                46.51         11.20        1.9527    6   1   1
                47.79         17.36        1.9032    6   2   0
                52.68          4.74        1.7374    4   4   4
                55.01         26.01        1.6692    6   4   0
                57.28         88.92        1.6085    6   4   2
                61.64         12.47        1.5046    8   0   0
                62.71          1.82        1.4817    7   4   1
                64.80          1.36        1.4387    6   5   3
                65.84          3.63        1.4186    8   2   2
                69.90         18.79        1.3458    8   4   0
                71.89         14.40        1.3133    8   4   2
                72.87          1.26        1.2980    7   6   1
                73.85         13.40        1.2831    6   6   4
                74.83          1.08        1.2688    7   5   4
                74.83          1.08        1.2688    8   5   1
                77.73          2.04        1.2285    8   4   4
                78.69          1.75        1.2159    8   5   3
                78.69          1.87        1.2159    9   4   1
                87.23          4.39        1.1176   10   4   0
                87.23          7.02        1.1176    8   6   4
                89.11         19.13        1.0988   10   4   2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.