Pyroxene-ideal
Thompson R M, Downs R T
American Mineralogist 88 (2003) 653-666
Model pyroxenes I: Ideal pyroxene topologies
Pyroxene #17b based on stacking sequence ABABACACBCBC
Note: Atoms Mg, Si, and O are assigned to atomic positions just for convenience.
_database_code_amcsd 0003020
CELL PARAMETERS: 19.5959 6.0000 3.4641 90.000 90.000 90.000
SPACE GROUP: P2_1/c
X-RAY WAVELENGTH: 1.541838
Cell Volume: 407.293
Density (g/cm3): 9.821
MAX. ABS. INTENSITY / VOLUME**2: 18.75529844
RIR: 0.622
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
20.10 1.16 4.4188 3 1 0 4
27.31 3.92 3.2660 6 0 0 2
29.78 8.32 3.0000 0 2 0 2
30.14 4.76 2.9654 -1 1 1 4
30.14 16.88 2.9654 1 1 1 4
31.18 8.40 2.8685 -2 1 1 4
31.18 3.61 2.8685 2 1 1 4
40.02 2.03 2.2528 -1 2 1 4
40.84 27.47 2.2094 6 2 0 4
40.84 3.43 2.2094 6 1 1 4
40.84 3.43 2.2094 -6 1 1 4
40.84 14.41 2.2094 2 2 1 4
42.18 15.91 2.1423 3 2 1 4
42.18 15.91 2.1423 -3 2 1 4
44.00 38.68 2.0580 4 2 1 4
44.00 3.07 2.0580 -4 2 1 4
44.25 90.66 2.0467 9 1 0 4
44.25 5.39 2.0467 7 1 1 4
44.25 3.95 2.0467 -7 1 1 4
46.25 10.09 1.9629 -5 2 1 4
51.89 2.39 1.7621 -7 2 1 4
53.08 8.78 1.7253 -1 3 1 4
53.08 4.39 1.7253 1 0 2 2
53.74 1.12 1.7056 -2 3 1 4
53.74 8.26 1.7056 2 3 1 4
53.74 4.13 1.7056 -2 0 2 2
55.20 3.49 1.6641 -8 2 1 4
55.20 4.49 1.6641 8 2 1 4
56.06 1.36 1.6406 10 1 1 4
56.06 5.31 1.6406 -2 1 2 4
56.34 4.15 1.6330 12 0 0 2
56.34 15.84 1.6330 4 3 1 4
56.34 7.35 1.6330 -4 3 1 4
56.34 3.67 1.6330 4 0 2 2
56.34 7.92 1.6330 -4 0 2 2
57.12 6.10 1.6126 3 1 2 4
57.12 6.10 1.6126 -3 1 2 4
58.24 9.67 1.5842 5 3 1 4
58.24 14.39 1.5842 -5 3 1 4
58.24 4.84 1.5842 -5 0 2 2
58.24 7.20 1.5842 5 0 2 2
58.58 1.24 1.5757 4 1 2 4
58.58 15.24 1.5757 -4 1 2 4
60.44 4.19 1.5317 -11 1 1 4
60.44 4.19 1.5317 5 1 2 4
60.50 3.22 1.5302 6 3 1 4
60.50 3.22 1.5302 -6 3 1 4
60.50 1.61 1.5302 6 0 2 2
60.50 1.61 1.5302 -6 0 2 2
62.06 1.75 1.4956 -1 2 2 4
63.12 21.43 1.4729 7 3 1 4
63.12 10.72 1.4729 -7 0 2 2
65.03 1.57 1.4343 12 1 1 4
65.03 1.57 1.4343 -12 1 1 4
65.22 1.15 1.4304 7 1 2 4
66.07 3.25 1.4142 -8 3 1 4
66.07 1.63 1.4142 8 0 2 2
68.12 1.63 1.3765 8 1 2 4
68.12 2.29 1.3765 -8 1 2 4
68.88 5.00 1.3631 6 4 0 4
68.88 2.75 1.3631 2 4 1 4
69.83 3.21 1.3469 -3 4 1 4
69.83 3.21 1.3469 3 4 1 4
71.15 7.91 1.3252 4 4 1 4
71.33 1.08 1.3222 -7 2 2 4
72.83 2.23 1.2987 -5 4 1 4
72.89 4.05 1.2978 10 3 1 4
72.89 2.02 1.2978 -10 0 2 2
74.30 2.44 1.2765 15 1 0 4
75.77 1.96 1.2554 13 2 1 4
76.75 4.81 1.2418 -11 3 1 4
76.75 3.36 1.2418 11 3 1 4
76.75 2.41 1.2418 11 0 2 2
76.75 1.68 1.2418 -11 0 2 2
79.95 1.41 1.2000 8 4 1 4
80.67 3.62 1.1911 -14 2 1 4
80.91 3.24 1.1882 12 3 1 4
80.91 3.24 1.1882 -12 3 1 4
80.91 1.62 1.1882 -12 0 2 2
80.91 1.62 1.1882 12 0 2 2
84.42 1.41 1.1474 11 2 2 4
85.37 19.72 1.1371 13 3 1 4
85.37 9.86 1.1371 -13 0 2 2
87.27 1.29 1.1172 -13 1 2 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.