Aragonite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060195 de Villiers J P R American Mineralogist 56 (1971) 758-767 Crystal structures of aragonite, strontianite, and witherite CELL PARAMETERS: 4.961400 7.967100 5.740400 90.00000 90.00000 90.00000 SPACE GROUP: Pmcn X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 21.11 1.90 4.2114 1 1 0 26.26 100.00 3.3958 1 1 1 27.26 58.62 3.2734 0 2 1 31.17 4.25 2.8707 0 0 2 32.79 8.65 2.7322 1 2 1 33.18 54.17 2.7008 0 1 2 36.16 29.52 2.4847 1 0 2 36.22 17.78 2.4804 2 0 0 37.30 15.80 2.4108 0 3 1 37.94 41.41 2.3721 1 1 2 38.45 29.08 2.3417 1 3 0 38.66 20.07 2.3291 0 2 2 41.24 14.14 2.1894 2 1 1 42.95 21.42 2.1057 2 2 0 45.53 3.43 1.9922 0 4 0 45.90 73.06 1.9769 2 2 1 48.35 31.78 1.8821 0 4 1 48.50 19.83 1.8769 2 0 2 49.91 1.96 1.8269 2 1 2 50.28 29.94 1.8146 1 3 2 51.96 3.41 1.7597 1 4 1 52.51 31.63 1.7423 1 1 3 52.96 7.65 1.7288 2 3 1 53.08 14.50 1.7251 0 2 3 54.00 2.26 1.6979 2 2 2 56.19 2.84 1.6367 0 4 2 56.85 1.82 1.6191 3 1 0 59.28 6.29 1.5583 3 1 1 59.50 1.01 1.5532 2 4 0 60.25 2.39 1.5357 0 5 1 61.86 6.23 1.4993 2 4 1 62.95 3.35 1.4760 3 2 1 63.38 7.18 1.4670 1 5 1 66.13 4.22 1.4126 0 1 4 66.25 3.02 1.4103 3 1 2 66.59 3.53 1.4038 3 3 0 68.68 3.82 1.3661 2 4 2 69.11 5.60 1.3586 1 1 4 69.59 2.13 1.3504 0 2 4 70.12 3.05 1.3415 1 5 2 70.93 1.92 1.3281 0 6 0 75.33 7.54 1.2611 3 3 2 76.67 3.01 1.2423 2 0 4 76.83 6.38 1.2402 4 0 0 77.13 9.84 1.2361 3 1 3 78.05 6.98 1.2238 1 3 4 78.74 1.96 1.2148 2 5 2 79.43 8.28 1.2060 2 4 3 79.48 3.20 1.2054 0 6 2 80.79 6.64 1.1890 1 5 3 82.28 1.17 1.1713 1 6 2 82.31 9.88 1.1708 2 6 0 83.28 3.63 1.1598 4 2 1 86.26 1.69 1.1271 4 1 2 86.43 3.95 1.1253 3 5 1 88.14 2.82 1.1078 1 1 5 88.59 1.04 1.1034 0 2 5 89.48 1.81 1.0947 4 2 2 89.48 1.81 1.0947 4 2 2 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.