Pyroxene-ideal
Thompson R M, Downs R T
American Mineralogist 88 (2003) 653-666
Model pyroxenes I: Ideal pyroxene topologies
Pyroxene #23 based on stacking sequence ABACBACBCABC
Note: Atoms Mg, Si, and O are assigned to atomic positions just for convenience.
_database_code_amcsd 0003030
CELL PARAMETERS: 19.5959 6.0000 3.4641 90.000 90.000 90.000
SPACE GROUP: P2_1cn
X-RAY WAVELENGTH: 1.541838
Cell Volume: 407.293
Density (g/cm3): 9.821
MAX. ABS. INTENSITY / VOLUME**2: 18.27130845
RIR: 0.606
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
20.10 1.19 4.4188 3 1 0 2
27.31 4.02 3.2660 6 0 0 1
29.78 8.54 3.0000 0 2 0 2
30.14 4.10 2.9654 1 1 1 4
31.18 1.68 2.8685 2 1 1 4
32.85 7.55 2.7262 3 1 1 4
35.07 3.33 2.5584 4 1 1 4
40.02 7.65 2.2528 1 2 1 4
40.84 28.20 2.2094 6 2 0 2
40.84 12.70 2.2094 2 2 1 4
44.00 16.59 2.0580 4 2 1 4
44.25 93.07 2.0467 9 1 0 2
44.25 6.93 2.0467 7 1 1 4
46.25 14.84 1.9629 5 2 1 4
47.95 13.41 1.8974 8 1 1 4
48.89 18.43 1.8628 6 2 1 4
51.89 5.70 1.7621 9 1 1 4
51.89 28.00 1.7621 7 2 1 4
53.08 8.54 1.7253 1 3 1 4
53.08 4.27 1.7253 1 0 2 2
53.74 45.19 1.7056 2 3 1 4
53.74 22.59 1.7056 2 0 2 2
54.84 28.06 1.6742 3 3 1 4
54.84 14.03 1.6742 3 0 2 2
55.20 6.69 1.6641 8 2 1 4
55.41 2.83 1.6581 1 1 2 4
56.06 5.12 1.6406 10 1 1 4
56.06 4.71 1.6406 2 1 2 4
56.34 4.26 1.6330 12 0 0 1
56.34 4.26 1.6330 4 3 1 4
56.34 2.13 1.6330 4 0 2 2
58.24 6.73 1.5842 5 3 1 4
58.24 3.36 1.5842 5 0 2 2
58.58 6.58 1.5757 4 1 2 4
60.44 2.71 1.5317 11 1 1 4
60.44 6.12 1.5317 5 1 2 4
62.66 8.07 1.4827 6 1 2 4
63.12 6.55 1.4729 7 3 1 4
63.12 3.28 1.4729 7 0 2 2
65.22 13.12 1.4304 7 1 2 4
66.07 11.57 1.4142 8 3 1 4
66.07 5.79 1.4142 8 0 2 2
66.78 4.35 1.4009 11 2 1 4
68.12 3.34 1.3765 8 1 2 4
68.31 1.56 1.3731 1 4 1 4
68.88 5.13 1.3631 6 4 0 2
68.88 2.48 1.3631 2 4 1 4
69.33 7.61 1.3555 9 3 1 4
69.33 3.80 1.3555 9 0 2 2
71.15 3.09 1.3252 12 2 1 4
71.15 3.46 1.3252 4 4 1 4
71.33 1.48 1.3222 7 2 2 4
72.83 3.24 1.2987 5 4 1 4
74.12 3.21 1.2792 8 2 2 4
74.30 2.50 1.2765 15 1 0 2
74.86 4.44 1.2684 6 4 1 4
76.75 2.33 1.2418 11 3 1 4
76.75 1.17 1.2418 11 0 2 2
77.23 7.57 1.2352 7 4 1 4
77.23 1.51 1.2352 9 2 2 4
78.68 2.51 1.2161 11 1 2 4
79.95 2.02 1.2000 8 4 1 4
80.67 1.55 1.1911 10 2 2 4
82.82 1.92 1.1655 12 1 2 4
85.37 6.52 1.1371 13 3 1 4
85.37 3.26 1.1371 13 0 2 2
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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.