Cristobalite II
Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
Physics and Chemistry of Minerals 38 (2011) 517-529
New insights into the high-pressure polymorphism of SiO2 cristobalite
Note: P = 3.5 GPa, data transformed from Dove et al (2000)
_database_code_amcsd 0018348
CELL PARAMETERS: 8.0110 4.5440 8.8900 90.000 121.000 90.000
SPACE GROUP: P2_1/c
X-RAY WAVELENGTH: 1.541838
Cell Volume: 277.391
Density (g/cm3): 2.877
MAX. ABS. INTENSITY / VOLUME**2: 9.061870046
RIR: 1.026
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
22.79 5.09 3.9028 0 1 1 4
23.05 39.82 3.8583 -1 1 1 4
23.35 100.00 3.8101 0 0 2 2
23.48 79.57 3.7894 1 1 0 4
24.37 65.83 3.6521 -2 0 2 2
28.10 9.17 3.1758 -1 1 2 4
29.15 17.55 3.0636 1 1 1 4
29.78 72.48 3.0000 -2 1 1 4
30.62 37.95 2.9196 0 1 2 4
31.43 4.04 2.8467 -2 1 2 4
32.21 15.98 2.7792 1 0 2 2
32.69 24.54 2.7393 2 1 0 4
33.73 16.75 2.6571 -3 0 2 2
36.56 3.66 2.4576 -1 1 3 4
37.08 7.39 2.4244 -2 1 3 4
37.95 2.11 2.3709 1 1 2 4
39.26 9.73 2.2950 2 1 1 4
40.07 5.39 2.2504 -3 1 1 4
40.64 14.12 2.2201 -2 0 4 2
40.69 2.72 2.2172 0 1 3 4
41.47 11.28 2.1773 0 2 1 4
41.63 7.00 2.1695 -1 2 1 4
41.88 1.30 2.1570 1 2 0 4
42.19 1.26 2.1417 -1 0 4 2
44.81 9.27 2.0226 -1 2 2 4
45.41 2.11 1.9971 -4 0 2 2
45.95 2.33 1.9749 -2 2 1 4
46.90 8.48 1.9373 -1 1 4 4
47.11 1.97 1.9292 -2 2 2 4
47.74 1.09 1.9051 0 0 4 2
48.49 3.41 1.8775 1 1 3 4
49.88 13.15 1.8283 -4 1 2 4
50.53 2.31 1.8062 -4 1 3 4
51.99 2.89 1.7590 1 2 2 4
52.05 5.07 1.7569 0 1 4 4
53.01 1.10 1.7274 2 2 1 4
53.03 1.40 1.7268 -3 2 2 4
53.37 5.56 1.7167 4 0 0 2
53.66 1.50 1.7081 -3 2 1 4
55.68 1.47 1.6508 -2 1 5 4
56.38 2.41 1.6319 1 0 4 2
56.57 1.66 1.6268 3 0 2 2
57.12 9.44 1.6125 3 2 0 4
58.87 2.22 1.5687 2 1 3 4
59.32 2.22 1.5579 -5 0 4 2
60.26 2.00 1.5359 -3 2 4 4
60.31 4.76 1.5347 -4 1 5 4
60.43 1.71 1.5318 2 2 2 4
60.65 1.14 1.5268 1 2 3 4
61.38 2.46 1.5104 -5 1 3 4
63.75 3.88 1.4598 0 2 4 4
65.59 5.80 1.4233 -4 2 4 4
65.62 2.36 1.4228 1 3 1 4
65.87 1.40 1.4179 -5 1 1 4
65.96 1.94 1.4163 -2 3 1 4
66.42 1.19 1.4075 0 3 2 4
66.43 1.78 1.4073 -3 1 6 4
66.87 2.74 1.3991 -2 3 2 4
67.33 1.75 1.3908 -2 1 6 4
67.54 1.25 1.3870 -3 2 5 4
67.60 3.90 1.3858 2 3 0 4
67.77 6.97 1.3827 -1 0 6 2
70.29 4.07 1.3392 -2 3 3 4
70.44 2.48 1.3368 -5 0 6 2
70.88 1.42 1.3296 4 0 2 2
70.94 2.13 1.3285 -6 0 4 2
71.13 2.79 1.3254 1 2 4 4
71.30 7.12 1.3227 3 2 2 4
71.81 2.54 1.3146 5 1 0 4
72.26 2.16 1.3075 -3 3 1 4
73.04 2.31 1.2954 -5 2 2 4
73.06 2.05 1.2952 -6 0 2 2
73.23 1.75 1.2925 1 1 5 4
73.66 1.46 1.2861 -3 3 3 4
74.40 1.44 1.2752 -6 1 4 4
76.99 1.32 1.2386 -6 1 5 4
78.14 1.27 1.2232 2 3 2 4
78.33 2.53 1.2207 1 3 3 4
78.99 2.75 1.2122 -4 2 6 4
79.94 2.68 1.2001 5 1 1 4
81.93 1.90 1.1759 -6 1 6 4
81.98 1.22 1.1753 5 2 0 4
82.79 2.32 1.1658 -4 3 4 4
83.84 1.31 1.1539 3 1 4 4
84.07 1.73 1.1513 -2 3 5 4
87.71 1.07 1.1127 1 1 6 4
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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.