Alunite Zema M, Callegari A M, Tarantino S C, Gasparini E, Ghigna P Mineralogical Magazine 76 (2012) 613-623 Thermal expansion of alunite up to dehydroxylation and collapse of the crystal structure Note: T = 100 C Locality: Hungary _database_code_amcsd 0018985 CELL PARAMETERS: 6.9771 6.9771 17.3600 90.000 90.000 120.000 SPACE GROUP: R-3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 731.864 Density (g/cm3): 2.790 MAX. ABS. INTENSITY / VOLUME**2: 15.79186837 RIR: 1.843 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 15.31 1.45 5.7867 0 0 3 2 15.53 16.15 5.7066 1 0 1 6 17.89 54.38 4.9591 0 1 2 6 25.53 28.32 3.4885 1 1 0 6 29.68 4.81 3.0104 0 1 5 6 29.91 100.00 2.9876 1 1 3 12 30.02 26.43 2.9764 0 2 1 6 30.91 8.75 2.8933 0 0 6 2 36.23 4.91 2.4795 0 2 4 6 39.27 34.83 2.2943 1 0 7 6 39.54 2.86 2.2791 2 0 5 6 40.86 6.40 2.2086 1 2 2 12 44.85 1.33 2.0210 2 1 4 12 47.12 5.49 1.9289 0 0 9 2 47.82 33.43 1.9022 0 3 3 6 47.82 1.23 1.9022 3 0 3 6 51.88 1.48 1.7625 2 0 8 6 52.46 23.97 1.7443 2 2 0 6 55.88 2.61 1.6455 3 1 2 12 58.69 2.15 1.5731 1 2 8 12 59.09 1.11 1.5633 1 3 4 12 61.43 2.98 1.5092 3 1 5 12 61.62 19.38 1.5052 0 2 10 6 61.63 1.19 1.5049 4 0 1 6 62.14 8.37 1.4938 2 2 6 12 62.40 2.22 1.4882 0 4 2 6 65.42 2.71 1.4266 4 0 4 6 67.20 1.89 1.3931 0 3 9 6 67.45 3.86 1.3885 1 3 7 12 67.64 1.03 1.3852 0 4 5 6 67.82 1.02 1.3818 3 2 1 12 68.55 2.99 1.3689 2 3 2 12 71.56 2.30 1.3185 4 1 0 12 72.49 2.02 1.3039 1 0 13 6 73.15 2.04 1.2937 2 2 9 12 73.69 2.86 1.2856 1 4 3 12 73.69 5.13 1.2856 4 1 3 12 79.15 7.33 1.2100 3 2 7 12 79.49 3.20 1.2057 1 3 10 12 82.01 1.87 1.1750 0 3 12 6 83.05 1.26 1.1629 3 3 0 6 83.94 4.86 1.1528 2 1 13 12 85.14 2.91 1.1396 4 0 10 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.