Pyroxene-ideal
Thompson R M, Downs R T
American Mineralogist 88 (2003) 653-666
Model pyroxenes I: Ideal pyroxene topologies
Pyroxene #19b based on stacking sequence ABABCABCBCAC
Note: Atoms Mg, Si, and O are assigned to atomic positions just for convenience.
_database_code_amcsd 0003023
CELL PARAMETERS: 19.5959 6.0000 3.4641 90.000 90.000 90.000
SPACE GROUP: P2/c
X-RAY WAVELENGTH: 1.541838
Cell Volume: 407.293
Density (g/cm3): 9.821
MAX. ABS. INTENSITY / VOLUME**2: 19.48835731
RIR: 0.646
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
20.10 1.12 4.4188 3 1 0 4
27.31 3.77 3.2660 6 0 0 2
29.78 8.01 3.0000 0 2 0 2
30.14 12.69 2.9654 -1 1 1 4
31.18 8.08 2.8685 -2 1 1 4
32.85 2.73 2.7262 3 1 1 4
32.85 2.73 2.7262 -3 1 1 4
40.84 26.44 2.2094 6 2 0 4
40.84 17.20 2.2094 -2 2 1 4
40.84 5.30 2.2094 2 2 1 4
42.18 3.83 2.1423 3 2 1 4
42.18 3.83 2.1423 -3 2 1 4
44.00 30.31 2.0580 4 2 1 4
44.00 6.40 2.0580 -4 2 1 4
44.25 87.25 2.0467 9 1 0 4
44.25 12.71 2.0467 7 1 1 4
46.25 8.28 1.9629 5 2 1 4
46.25 9.71 1.9629 -5 2 1 4
47.95 2.69 1.8974 8 1 1 4
48.89 1.41 1.8628 6 2 1 4
48.89 1.41 1.8628 -6 2 1 4
51.89 4.44 1.7621 -7 2 1 4
53.08 2.16 1.7253 -1 3 1 4
53.08 12.71 1.7253 1 3 1 4
53.08 6.35 1.7253 -1 0 2 2
53.08 1.08 1.7253 1 0 2 2
53.74 1.07 1.7056 -2 3 1 4
53.74 3.18 1.7056 2 3 1 4
53.74 1.59 1.7056 -2 0 2 2
54.84 9.78 1.6742 3 3 1 4
54.84 9.78 1.6742 -3 3 1 4
54.84 4.89 1.6742 3 0 2 2
54.84 4.89 1.6742 -3 0 2 2
55.20 11.95 1.6641 -8 2 1 4
56.06 1.31 1.6406 10 1 1 4
56.06 1.82 1.6406 -10 1 1 4
56.06 1.90 1.6406 -2 1 2 4
56.06 6.44 1.6406 2 1 2 4
56.34 4.00 1.6330 12 0 0 2
56.34 15.24 1.6330 4 3 1 4
56.34 1.55 1.6330 -4 3 1 4
56.34 7.62 1.6330 -4 0 2 2
57.12 1.47 1.6126 3 1 2 4
57.12 1.47 1.6126 -3 1 2 4
58.24 15.29 1.5842 5 3 1 4
58.24 1.89 1.5842 -5 3 1 4
58.24 7.65 1.5842 -5 0 2 2
58.58 2.50 1.5757 4 1 2 4
58.58 12.04 1.5757 -4 1 2 4
60.44 5.09 1.5317 -11 1 1 4
60.44 4.03 1.5317 5 1 2 4
60.44 3.42 1.5317 -5 1 2 4
62.06 1.33 1.4956 1 2 2 4
63.12 11.06 1.4729 7 3 1 4
63.12 5.16 1.4729 -7 3 1 4
63.12 2.58 1.4729 7 0 2 2
63.12 5.53 1.4729 -7 0 2 2
65.22 2.04 1.4304 7 1 2 4
66.07 3.13 1.4142 -8 3 1 4
66.07 4.20 1.4142 8 3 1 4
66.07 1.56 1.4142 8 0 2 2
66.07 2.10 1.4142 -8 0 2 2
68.12 5.94 1.3765 8 1 2 4
68.88 4.81 1.3631 6 4 0 4
68.88 3.44 1.3631 -2 4 1 4
71.15 6.34 1.3252 4 4 1 4
71.15 1.28 1.3252 -4 4 1 4
71.33 2.69 1.3222 -7 2 2 4
72.83 1.82 1.2987 5 4 1 4
72.83 2.15 1.2987 -5 4 1 4
72.89 3.90 1.2978 10 3 1 4
72.89 1.20 1.2978 -10 3 1 4
72.89 1.95 1.2978 -10 0 2 2
74.30 2.35 1.2765 15 1 0 4
75.77 1.88 1.2554 13 2 1 4
76.75 5.20 1.2418 11 3 1 4
76.75 2.60 1.2418 -11 0 2 2
77.23 1.15 1.2352 -7 4 1 4
79.95 3.57 1.2000 -8 4 1 4
80.67 1.63 1.1911 14 2 1 4
84.42 1.78 1.1474 11 2 2 4
85.37 4.37 1.1371 -13 3 1 4
85.37 11.30 1.1371 13 3 1 4
85.37 5.65 1.1371 -13 0 2 2
85.37 2.19 1.1371 13 0 2 2
87.27 1.24 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.