Nesquehonite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050639 Stephan G W, MacGillavry C H Acta Crystallographica B28 (1972) 1031-1033 The crystal structure of nesquehonite, MgCO3*3H2O Locality: synthetic CELL PARAMETERS: 7.699918 5.363430 12.11917 90.00000 90.23452 90.00000 SPACE GROUP: P2_1/n X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 13.59 57.81 6.5111 -1 0 1 13.64 91.73 6.4870 1 0 1 14.61 7.06 6.0595 0 0 2 18.07 13.91 4.9046 0 1 1 21.45 4.36 4.1398 -1 1 1 23.08 100.00 3.8499 2 0 0 24.83 23.13 3.5833 -1 0 3 24.96 3.44 3.5649 -1 1 2 24.91 11.16 3.5712 1 0 3 25.01 2.15 3.5569 1 1 2 27.37 1.79 3.2556 -2 0 2 27.47 6.64 3.2435 2 0 2 27.62 37.79 3.2268 0 1 3 29.45 17.00 3.0308 -2 1 1 29.46 43.14 3.0298 0 0 4 29.49 20.76 3.0259 2 1 1 29.96 12.32 2.9795 -1 1 3 30.04 9.74 2.9726 1 1 3 32.14 27.74 2.7830 -2 1 2 32.22 30.87 2.7755 2 1 2 34.22 83.97 2.6184 0 2 1 35.41 1.37 2.5325 1 2 0 35.70 7.98 2.5130 -3 0 1 35.76 23.47 2.5088 3 0 1 35.92 14.00 2.4983 -1 1 4 36.00 9.95 2.4929 1 1 4 36.23 9.96 2.4770 -2 1 3 36.36 11.81 2.4691 2 1 3 37.67 2.03 2.3857 -2 0 4 38.48 3.23 2.3378 -1 2 2 38.51 5.42 2.3355 1 2 2 38.87 1.39 2.3147 -1 0 5 38.97 3.52 2.3093 1 0 5 39.63 1.15 2.2725 3 1 1 40.98 7.43 2.2005 2 2 0 41.39 8.19 2.1798 -2 1 4 41.57 8.30 2.1704 -3 0 3 41.53 4.86 2.1725 2 1 4 41.67 4.97 2.1654 -3 1 2 41.66 1.85 2.1660 -2 2 1 41.74 1.73 2.1623 3 0 3 41.78 6.61 2.1600 3 1 2 42.50 1.06 2.1252 -1 1 5 42.59 2.76 2.1210 1 1 5 44.83 17.27 2.0198 0 0 6 45.02 5.23 2.0119 -3 1 3 45.11 4.35 2.0081 0 2 4 45.17 6.55 2.0055 3 1 3 46.68 3.10 1.9444 -1 2 4 46.93 2.17 1.9343 -2 2 3 47.17 42.49 1.9250 4 0 0 48.10 4.81 1.8902 0 1 6 49.09 1.04 1.8542 3 2 0 49.41 7.00 1.8429 -3 1 4 49.57 1.66 1.8374 -1 1 6 49.60 5.38 1.8363 3 1 4 49.66 1.19 1.8341 1 1 6 50.73 36.04 1.7982 0 2 5 50.89 1.94 1.7929 -4 1 1 51.54 4.93 1.7716 3 2 2 53.08 3.54 1.7240 -1 3 1 53.09 3.10 1.7236 1 3 1 53.39 15.89 1.7147 0 3 2 54.90 1.50 1.6711 3 1 5 55.46 3.81 1.6555 -4 1 3 55.63 2.90 1.6508 4 1 3 55.75 11.22 1.6476 0 1 7 56.22 2.34 1.6349 0 3 3 56.48 2.08 1.6278 -4 0 4 56.50 1.59 1.6273 2 2 5 56.71 4.27 1.6218 4 0 4 57.57 1.57 1.5998 -1 3 3 57.61 1.30 1.5987 1 3 3 58.21 4.47 1.5836 -3 2 4 58.38 1.49 1.5795 3 2 4 59.53 9.22 1.5516 -4 2 1 59.58 6.12 1.5503 4 2 1 60.03 2.00 1.5397 0 3 4 60.93 1.90 1.5192 3 1 6 61.54 3.19 1.5057 -2 3 3 61.62 3.03 1.5039 2 3 3 63.84 2.66 1.4568 -3 3 1 63.88 2.69 1.4560 3 3 1 65.01 2.46 1.4334 -1 1 8 65.11 1.91 1.4314 1 1 8 66.96 2.80 1.3963 -4 0 6 67.27 1.92 1.3907 4 0 6 67.63 1.44 1.3840 3 1 7 67.86 1.86 1.3799 -3 3 3 67.98 2.44 1.3779 3 3 3 69.50 1.65 1.3513 -4 1 6 70.12 2.39 1.3409 0 4 0 71.65 5.79 1.3160 -4 2 5 71.90 6.12 1.3121 4 2 5 73.77 1.31 1.2833 6 0 0 73.92 3.51 1.2811 -4 3 2 74.02 3.00 1.2797 4 3 2 74.69 1.57 1.2698 -3 1 8 74.99 2.75 1.2655 3 1 8 75.79 3.27 1.2541 -4 1 7 76.13 1.95 1.2493 4 1 7 77.84 1.44 1.2261 0 4 4 78.93 1.18 1.2119 0 0 10 83.59 1.83 1.1558 0 3 8 88.87 1.32 1.1002 4 4 0 89.40 1.33 1.0951 7 0 1 89.40 1.33 1.0951 7 0 1 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.