Afghanite Ballirano P, Bonaccorsi E, Maras A, Merlino S European Journal of Mineralogy 9 (1997) 21-30 Crystal structure of afghanite, the eight-layer member of the cancrinite-group: evidence for long-range Si,Al ordering _database_code_amcsd 0006636 CELL PARAMETERS: 12.8013 12.8013 21.4119 90.000 90.000 120.000 SPACE GROUP: P31c X-RAY WAVELENGTH: 1.541838 Cell Volume: 3038.743 Density (g/cm3): 2.528 MAX. ABS. INTENSITY / VOLUME**2: 8.909270090 RIR: 1.148 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.97 1.19 11.0863 1 0 0 6 8.26 1.55 10.7059 0 0 2 1 8.98 2.35 9.8449 1 0 1 6 11.49 1.13 7.7012 1 0 2 6 13.84 1.00 6.4007 1 1 0 3 14.76 9.08 6.0012 1 0 3 6 16.52 1.14 5.3662 2 0 1 6 16.56 2.42 5.3530 0 0 4 1 18.41 46.64 4.8205 1 0 4 6 21.20 2.67 4.1902 2 1 0 6 21.61 2.06 4.1122 2 1 1 6 21.61 1.78 4.1122 3 -1 1 6 21.64 1.35 4.1062 1 1 4 3 21.64 1.17 4.1062 2 -1 4 3 22.25 26.80 3.9947 1 0 5 6 24.08 100.00 3.6954 3 0 0 6 24.64 3.04 3.6135 3 -1 3 6 24.64 2.94 3.6135 2 1 3 6 26.30 3.29 3.3889 2 0 5 6 27.02 46.46 3.2995 3 -1 4 6 27.02 45.57 3.2995 2 1 4 6 27.17 2.07 3.2816 3 0 3 6 27.88 4.12 3.2003 2 2 0 3 29.35 2.56 3.0436 4 -1 1 6 29.35 2.66 3.0436 3 1 1 6 29.37 1.70 3.0411 3 0 4 6 30.31 5.42 2.9487 1 0 7 6 31.69 3.02 2.8239 3 1 3 6 31.69 3.63 2.8239 4 -1 3 6 31.99 3.80 2.7977 3 0 5 6 32.30 9.09 2.7716 4 0 0 6 32.58 9.91 2.7486 4 0 1 6 32.60 1.68 2.7468 2 2 4 3 32.60 1.98 2.7468 4 -2 4 3 33.48 32.28 2.6765 0 0 8 1 33.61 4.65 2.6662 3 1 4 6 33.61 4.66 2.6662 4 -1 4 6 34.47 2.78 2.6017 1 0 8 6 34.72 9.17 2.5836 4 0 3 6 35.96 3.40 2.4976 4 -1 5 6 35.96 3.44 2.4976 3 1 5 6 36.51 24.77 2.4612 4 0 4 6 37.16 5.95 2.4192 4 1 0 6 38.70 5.68 2.3268 4 0 5 6 38.71 1.01 2.3261 1 0 9 6 40.69 1.01 2.2173 5 0 0 6 41.65 1.76 2.1685 4 -1 7 6 41.65 1.54 2.1685 3 1 7 6 41.67 2.64 2.1677 3 0 8 6 42.36 28.94 2.1335 3 3 0 3 43.18 2.06 2.0951 4 2 0 6 44.09 3.31 2.0539 4 0 7 6 44.11 4.83 2.0531 2 2 8 3 44.11 5.03 2.0531 4 -2 8 3 45.56 1.07 1.9911 5 1 0 6 46.55 1.07 1.9510 6 -2 4 6 46.55 1.15 1.9510 4 2 4 6 47.21 9.40 1.9253 4 0 8 6 48.80 2.38 1.8662 5 1 4 6 48.80 2.66 1.8662 6 -1 4 6 49.32 1.88 1.8477 6 0 0 6 50.24 1.05 1.8160 7 -3 1 6 50.56 2.16 1.8052 4 0 9 6 50.88 10.79 1.7947 4 1 8 6 50.88 10.59 1.7947 5 -1 8 6 51.48 1.52 1.7752 5 2 0 6 51.90 4.18 1.7617 1 0 12 6 52.38 1.13 1.7466 6 0 4 6 53.08 2.93 1.7253 7 -3 4 6 53.08 3.12 1.7253 4 3 4 6 56.02 2.19 1.6417 2 1 12 6 56.02 2.22 1.6417 3 -1 12 6 57.14 1.27 1.6121 6 1 4 6 57.14 1.47 1.6121 7 -1 4 6 57.60 8.72 1.6002 4 4 0 3 59.82 1.22 1.5461 7 0 3 6 59.94 1.16 1.5433 3 1 12 6 59.94 1.14 1.5433 4 -1 12 6 60.93 2.51 1.5206 6 0 8 6 61.01 2.26 1.5187 7 0 4 6 61.84 6.20 1.5003 4 0 12 6 63.34 3.94 1.4684 7 1 0 6 65.98 1.71 1.4159 4 0 13 6 68.29 7.11 1.3734 8 -4 8 3 68.29 7.03 1.3734 4 4 8 3 70.15 8.51 1.3416 8 0 4 6 70.35 4.72 1.3382 0 0 16 1 71.56 1.42 1.3185 8 0 5 6 73.57 4.56 1.2874 7 1 8 6 73.57 4.42 1.2874 8 -1 8 6 74.41 1.28 1.2750 4 3 12 6 74.41 1.27 1.2750 7 -3 12 6 75.57 1.94 1.2583 3 0 16 6 77.01 2.42 1.2383 9 -3 8 6 77.01 2.44 1.2383 6 3 8 6 77.49 2.56 1.2318 9 0 0 6 79.54 1.08 1.2051 4 0 16 6 81.21 1.07 1.1845 7 0 12 6 89.56 3.66 1.0945 8 0 12 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.