Humberstonite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060718 Burns P C, Hawthorne F C The Canadian Mineralogist 32 (1994) 381-385 The crystal structure of humberstonite, a mixed sulfate-nitrate mineral CELL PARAMETERS: 10.91098 10.91098 24.39354 90.00000 90.00000 120.0000 SPACE GROUP: R-3 X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 10.07 31.00 8.8112 1 0 1 10.91 45.41 8.1312 0 0 3 11.88 21.08 7.4698 0 1 2 16.27 6.32 5.4555 1 1 0 17.33 1.88 5.1239 1 0 4 19.16 11.47 4.6384 0 2 1 19.62 9.45 4.5303 1 1 3 19.62 14.58 4.5303 2 -1 3 20.18 17.07 4.4056 2 0 2 20.51 2.14 4.3350 0 1 5 21.88 22.18 4.0656 0 0 6 23.84 15.22 3.7349 0 2 4 25.22 1.72 3.5338 2 1 1 26.01 5.14 3.4275 -1 3 2 26.01 6.74 3.4275 1 2 2 26.28 100.00 3.3940 2 0 5 27.29 4.08 3.2695 1 0 7 27.37 1.42 3.2599 2 -1 6 28.35 1.53 3.1497 3 0 0 28.99 2.58 3.0819 3 -1 4 30.45 7.58 2.9371 0 3 3 30.83 18.39 2.9018 0 1 8 31.05 11.13 2.8818 -1 3 5 31.05 6.22 2.8818 1 2 5 31.92 11.73 2.8045 0 2 7 32.84 64.80 2.7277 2 2 0 34.43 3.25 2.6057 1 3 1 34.70 16.69 2.5861 4 -2 3 34.70 13.50 2.5861 2 2 3 35.03 13.80 2.5620 2 0 8 35.03 1.06 2.5623 3 1 2 36.02 2.56 2.4942 3 -1 7 36.08 6.58 2.4899 0 3 6 37.35 4.25 2.4078 1 3 4 37.35 2.78 2.4078 -1 4 4 38.11 4.28 2.3619 1 0 10 38.29 1.26 2.3513 4 0 1 38.84 3.98 2.3192 0 4 2 40.98 16.96 2.2028 4 0 4 41.67 1.72 2.1675 0 2 10 42.52 5.67 2.1262 0 4 5 43.91 3.33 2.0620 1 4 0 43.91 2.04 2.0620 4 1 0 44.08 2.51 2.0545 0 3 9 44.08 2.08 2.0545 3 0 9 44.35 2.11 2.0426 3 2 4 44.57 9.86 2.0328 0 0 12 45.00 1.06 2.0143 3 -1 10 45.38 2.53 1.9987 5 -1 3 47.28 1.74 1.9226 4 -2 9 47.28 2.06 1.9226 2 2 9 47.74 1.80 1.9049 2 -1 12 48.76 33.93 1.8674 0 4 8 48.76 2.41 1.8676 5 0 2 49.52 1.89 1.8405 1 0 13 49.52 1.35 1.8407 3 2 7 49.57 1.75 1.8390 4 1 6 49.57 1.65 1.8390 5 -1 6 51.29 1.21 1.7810 -2 6 1 51.29 1.25 1.7810 2 4 1 51.49 1.42 1.7747 6 -3 3 51.73 1.18 1.7668 2 3 8 51.73 3.05 1.7668 -2 5 8 52.46 2.85 1.7439 0 2 13 53.65 1.34 1.7080 3 0 12 54.17 1.14 1.6930 5 1 1 54.73 3.00 1.6769 4 2 5 54.73 3.07 1.6769 6 -2 5 55.29 1.49 1.6611 3 -1 13 55.29 1.02 1.6611 2 1 13 55.29 1.51 1.6613 0 5 7 56.03 1.40 1.6411 5 -1 9 56.44 1.14 1.6300 4 -2 12 56.44 1.43 1.6300 2 2 12 58.60 6.92 1.5749 6 0 0 58.97 1.46 1.5660 -1 3 14 58.97 1.81 1.5660 1 2 14 59.62 1.62 1.5503 4 3 1 59.62 1.61 1.5503 7 -3 1 59.80 4.66 1.5461 0 6 3 60.02 5.61 1.5409 6 -2 8 60.02 4.26 1.5409 4 2 8 62.11 1.63 1.4940 0 5 10 62.41 1.41 1.4875 -2 7 3 62.41 1.29 1.4875 2 5 3 63.27 1.91 1.4693 4 0 13 64.33 1.19 1.4476 5 -1 12 64.67 1.16 1.4409 -2 6 10 64.67 1.78 1.4409 2 4 10 65.81 1.12 1.4187 5 -2 13 65.81 1.62 1.4187 3 2 13 66.97 1.92 1.3968 4 -2 15 66.97 1.93 1.3968 2 2 15 67.79 1.45 1.3820 7 -1 5 68.81 9.58 1.3639 4 4 0 68.94 1.05 1.3617 6 0 9 73.13 2.58 1.2936 -2 6 13 73.13 2.77 1.2936 2 4 13 73.97 1.47 1.2810 4 0 16 75.03 2.37 1.2655 2 6 5 75.03 2.48 1.2655 -2 8 5 78.83 1.03 1.2137 2 2 18 79.60 2.08 1.2039 2 6 8 79.60 1.75 1.2039 -2 8 8 85.86 1.36 1.1313 0 6 15 86.17 1.35 1.1280 4 0 19 88.79 1.47 1.1014 8 0 8 88.79 1.47 1.1014 8 0 8 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.