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 = 400 C Locality: Hungary _database_code_amcsd 0018988 CELL PARAMETERS: 6.9897 6.9897 17.5740 90.000 90.000 120.000 SPACE GROUP: R-3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 743.564 Density (g/cm3): 2.734 MAX. ABS. INTENSITY / VOLUME**2: 14.89004013 RIR: 1.774 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 15.12 1.91 5.8580 0 0 3 2 15.48 15.95 5.7233 1 0 1 6 17.79 60.49 4.9849 0 1 2 6 25.49 27.92 3.4948 1 1 0 6 29.38 5.43 3.0396 0 1 5 6 29.77 100.00 3.0013 1 1 3 12 29.96 26.22 2.9827 0 2 1 6 30.52 8.59 2.9290 0 0 6 2 36.03 5.04 2.4925 0 2 4 6 38.83 33.69 2.3190 1 0 7 6 39.28 2.53 2.2935 2 0 5 6 40.75 5.41 2.2141 1 2 2 12 44.66 1.23 2.0293 2 1 4 12 46.51 5.65 1.9527 0 0 9 2 47.67 31.91 1.9078 0 3 3 6 47.67 1.19 1.9078 3 0 3 6 51.40 1.32 1.7778 2 0 8 6 52.36 22.19 1.7474 2 2 0 6 55.74 2.67 1.6490 3 1 2 12 58.22 1.96 1.5846 1 2 8 12 60.96 17.84 1.5198 0 2 10 6 61.18 2.46 1.5149 3 1 5 12 61.50 1.13 1.5077 4 0 1 6 61.82 7.68 1.5007 2 2 6 12 62.25 1.86 1.4914 0 4 2 6 65.20 2.47 1.4308 4 0 4 6 66.65 1.47 1.4032 0 3 9 6 67.06 3.50 1.3956 1 3 7 12 67.37 1.08 1.3900 0 4 5 6 68.39 2.85 1.3717 2 3 2 12 71.41 1.90 1.3209 4 1 0 12 71.51 1.74 1.3193 1 0 13 6 72.60 2.05 1.3022 2 2 9 12 73.49 2.44 1.2886 1 4 3 12 73.49 4.35 1.2886 4 1 3 12 78.75 6.09 1.2152 3 2 7 12 78.85 2.54 1.2140 1 3 10 12 81.15 1.88 1.1852 0 3 12 6 82.87 1.00 1.1650 3 3 0 6 82.96 4.05 1.1639 2 1 13 12 84.48 2.46 1.1467 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.