Clinoenstatite
Tribaudino M, Nestola F, Camara F, Domeneghetti M C
American Mineralogist 87 (2002) 648-657
The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene
(Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior
Sample: dien2, T = 800 deg C
Locality: synthetic
_database_code_amcsd 0002804
CELL PARAMETERS: 9.7390 8.9360 5.2490 90.000 108.800 90.000
SPACE GROUP: P2_1/c
X-RAY WAVELENGTH: 1.541838
Cell Volume: 432.437
Density (g/cm3): 3.120
MAX. ABS. INTENSITY / VOLUME**2: 8.831286291
RIR: 0.922
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
19.87 7.16 4.4680 0 2 0 2
20.45 3.77 4.3427 0 1 1 4
25.01 2.27 3.5610 1 1 1 4
26.48 1.39 3.3655 -1 2 1 4
26.83 38.42 3.3224 0 2 1 4
27.81 34.66 3.2083 2 2 0 4
29.56 100.00 3.0218 -2 2 1 4
30.50 1.08 2.9307 1 2 1 4
30.54 26.00 2.9273 -3 1 1 4
30.77 54.01 2.9061 3 1 0 4
31.56 1.75 2.8344 1 3 0 4
34.85 22.93 2.5742 -1 3 1 4
35.08 7.28 2.5583 -2 0 2 2
35.13 4.29 2.5548 0 3 1 4
36.15 37.53 2.4845 0 0 2 2
36.59 20.55 2.4559 2 2 1 4
37.31 4.92 2.4103 -2 3 1 4
40.45 7.41 2.2298 3 1 1 4
40.54 3.92 2.2255 1 0 2 2
41.59 1.28 2.1714 0 2 2 4
41.83 7.40 2.1595 1 1 2 4
42.08 24.22 2.1473 -3 3 1 4
42.25 1.75 2.1389 3 3 0 4
42.65 4.40 2.1197 -4 2 1 4
43.75 1.18 2.0692 -3 2 2 4
44.15 9.05 2.0511 -4 0 2 2
44.46 9.00 2.0375 0 4 1 4
45.10 2.77 2.0104 2 4 0 4
45.36 1.57 1.9991 -4 1 2 4
46.27 6.23 1.9619 -2 4 1 4
46.80 5.44 1.9413 2 0 2 2
48.62 1.14 1.8726 -4 3 1 4
49.61 1.11 1.8375 -3 3 2 4
50.54 5.18 1.8058 5 1 0 4
51.31 6.10 1.7805 2 2 2 4
51.37 2.98 1.7787 2 4 1 4
52.13 6.95 1.7545 1 5 0 4
53.01 1.58 1.7274 4 2 1 4
54.53 2.73 1.6827 -2 4 2 4
54.80 1.91 1.6753 -3 1 3 4
55.30 3.21 1.6612 0 4 2 4
55.50 5.07 1.6556 3 1 2 4
56.50 19.36 1.6287 -5 3 1 4
56.52 17.16 1.6281 -2 2 3 4
57.45 1.94 1.6041 4 4 0 4
59.69 3.68 1.5491 -6 0 2 2
59.73 2.28 1.5481 -3 5 1 4
59.87 2.82 1.5449 3 5 0 4
60.23 3.37 1.5366 6 0 0 2
61.50 4.17 1.5078 -2 3 3 4
62.03 8.51 1.4961 -1 3 3 4
62.35 10.50 1.4893 0 6 0 2
63.06 1.16 1.4742 -5 1 3 4
63.26 2.66 1.4700 4 0 2 2
63.48 1.03 1.4653 2 4 2 4
63.57 2.00 1.4636 -6 2 2 4
64.20 1.77 1.4508 0 5 2 4
65.81 2.82 1.4191 -3 5 2 4
66.19 1.02 1.4119 3 5 1 4
67.38 21.01 1.3899 5 3 1 4
68.10 3.98 1.3768 -2 4 3 4
68.37 2.80 1.3721 1 3 3 4
69.12 1.48 1.3589 -7 0 2 2
69.46 1.01 1.3532 2 2 3 4
70.03 6.47 1.3435 -7 1 2 4
70.49 2.60 1.3359 -5 3 3 4
70.82 1.33 1.3305 0 4 3 4
72.27 1.48 1.3074 -3 0 4 2
72.55 1.77 1.3030 7 1 0 4
72.98 1.21 1.2964 -2 1 4 4
73.16 1.13 1.2936 -3 1 4 4
73.59 2.35 1.2871 -2 6 2 4
73.84 1.17 1.2833 5 5 0 4
74.00 2.01 1.2811 5 1 2 4
74.12 2.97 1.2792 -4 0 4 2
74.24 7.36 1.2774 0 6 2 4
75.54 1.73 1.2587 -7 3 1 4
76.72 1.01 1.2422 0 0 4 2
77.93 5.04 1.2259 3 5 2 4
79.54 1.16 1.2051 -4 6 2 4
81.00 1.03 1.1870 3 3 3 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.