Anhydrite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R061102 Hawthorne F C, Ferguson R B The Canadian Mineralogist 13 (1975) 289-292 Anhydrous sulphates. II. Refinement of the crystal structure of anhydrite CELL PARAMETERS: 7.003933 6.995572 6.241718 90.00000 90.00000 90.00000 SPACE GROUP: Amma X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 22.93 8.87 3.8782 1 1 1 25.47 98.76 3.4978 0 2 0 25.44 100.00 3.5020 2 0 0 28.60 3.97 3.1209 0 0 2 31.38 60.16 2.8507 1 0 2 31.97 5.89 2.7990 2 1 1 36.29 13.95 2.4748 2 2 0 38.65 33.96 2.3287 0 2 2 38.63 2.43 2.3299 2 0 2 40.82 38.88 2.2097 1 2 2 41.32 12.21 2.1844 0 3 1 43.34 12.23 2.0871 3 1 1 45.47 9.02 1.9942 0 1 3 46.83 6.36 1.9391 2 2 2 48.69 27.77 1.8694 3 0 2 49.14 6.07 1.8534 2 3 1 52.29 10.57 1.7489 0 4 0 52.22 10.25 1.7510 4 0 0 55.73 27.63 1.6487 3 2 2 57.77 4.75 1.5951 3 3 1 59.01 3.90 1.5646 2 4 0 58.96 3.64 1.5658 4 2 0 60.67 5.48 1.5257 0 4 2 60.78 1.02 1.5231 1 0 4 61.11 1.26 1.5157 1 3 3 62.25 9.86 1.4907 1 4 2 65.46 4.01 1.4251 0 2 4 65.45 1.56 1.4253 2 0 4 65.76 1.77 1.4192 2 3 3 66.85 1.46 1.3987 2 4 2 66.81 1.91 1.3995 4 2 2 66.98 3.93 1.3964 1 2 4 68.66 1.40 1.3662 4 3 1 71.43 9.09 1.3199 2 2 4 72.87 3.15 1.2973 3 0 4 74.21 10.00 1.2771 3 4 2 74.16 3.41 1.2780 5 0 2 77.02 1.88 1.2374 4 4 0 78.61 7.41 1.2164 3 2 4 79.86 4.33 1.2004 5 2 2 82.72 3.98 1.1659 0 6 0 82.60 3.98 1.1673 6 0 0 82.86 1.72 1.1643 0 4 4 84.25 1.90 1.1486 1 4 4 88.29 3.36 1.1062 2 6 0 88.18 3.36 1.1073 6 2 0 88.42 4.37 1.1049 2 4 4 88.38 4.60 1.1053 4 2 4 88.38 4.60 1.1053 4 2 4 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.