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 = 200 C
Locality: Hungary
_database_code_amcsd 0018986
CELL PARAMETERS: 6.9806 6.9806 17.4250 90.000 90.000 120.000
SPACE GROUP: R-3m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 735.341
Density (g/cm3): 2.774
MAX. ABS. INTENSITY / VOLUME**2: 15.52524805
RIR: 1.823
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
15.25 1.61 5.8083 0 0 3 2
15.51 16.14 5.7114 1 0 1 6
17.86 56.01 4.9668 0 1 2 6
25.52 28.17 3.4903 1 1 0 6
29.59 5.00 3.0192 0 1 5 6
29.87 100.00 2.9917 1 1 3 12
30.00 26.29 2.9782 0 2 1 6
30.79 8.79 2.9042 0 0 6 2
36.17 4.96 2.4834 0 2 4 6
39.14 34.61 2.3018 1 0 7 6
39.46 2.76 2.2834 2 0 5 6
40.83 6.08 2.2102 1 2 2 12
44.79 1.32 2.0235 2 1 4 12
46.93 5.58 1.9361 0 0 9 2
47.77 32.90 1.9038 0 3 3 6
47.77 1.22 1.9038 3 0 3 6
51.73 1.44 1.7671 2 0 8 6
52.43 23.43 1.7451 2 2 0 6
55.84 2.64 1.6465 3 1 2 12
58.55 2.08 1.5766 1 2 8 12
59.03 1.06 1.5648 1 3 4 12
61.36 2.81 1.5109 3 1 5 12
61.42 18.95 1.5096 0 2 10 6
61.59 1.18 1.5057 4 0 1 6
62.04 8.19 1.4959 2 2 6 12
62.36 2.12 1.4891 0 4 2 6
65.36 2.66 1.4279 4 0 4 6
67.03 1.76 1.3961 0 3 9 6
67.33 3.75 1.3906 1 3 7 12
67.56 1.05 1.3866 0 4 5 6
68.51 2.96 1.3697 2 3 2 12
71.52 2.14 1.3192 4 1 0 12
72.19 1.93 1.3086 1 0 13 6
72.99 2.07 1.2963 2 2 9 12
73.63 2.72 1.2864 1 4 3 12
73.63 4.86 1.2864 4 1 3 12
79.03 6.95 1.2116 3 2 7 12
79.30 2.95 1.2082 1 3 10 12
81.75 1.88 1.1781 0 3 12 6
83.00 1.17 1.1634 3 3 0 6
83.64 4.57 1.1561 2 1 13 12
84.94 2.77 1.1417 4 0 10 6
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XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.