Braunite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050390 de Villiers J P R American Mineralogist 60 (1975) 1098-1104 The crystal structure of braunite with reference to its solid-solution behavior CELL PARAMETERS: 9.421581 9.421581 18.69211 90.00000 90.00000 90.00000 ALTERNATE SETTING FOR SPACE GROUP: I4_1/acd X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 16.36 1.34 5.4249 1 1 2 18.85 2.32 4.7108 2 0 0 25.53 6.04 3.4903 2 1 3 33.03 100.00 2.7125 2 2 4 38.21 12.76 2.3554 4 0 0 38.53 5.78 2.3365 0 0 8 41.81 2.42 2.1605 3 3 2 41.96 2.79 2.1532 3 1 6 42.19 7.16 2.1417 3 2 5 48.55 2.86 1.8748 4 3 1 50.33 1.06 1.8126 5 1 2 52.71 2.67 1.7362 4 1 7 55.13 11.44 1.6655 4 4 0 55.37 29.23 1.6588 4 0 8 60.07 1.24 1.5396 4 3 7 60.19 2.68 1.5369 4 1 9 61.69 2.48 1.5031 6 1 3 63.39 2.09 1.4669 5 4 1 65.17 1.26 1.4309 6 1 5 65.77 15.53 1.4193 6 2 4 66.21 10.21 1.4110 2 2 12 68.45 1.38 1.3701 6 3 3 69.25 4.83 1.3562 4 4 8 81.73 1.72 1.1777 8 0 0 82.53 1.97 1.1683 0 0 16 82.70 1.26 1.1663 8 1 1 82.70 1.26 1.1663 8 1 1 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.