Chevkinite-(Ce)
Sokolova E V, Hawthorne F C, Della Ventura G, Kartashov P M
The Canadian Mineralogist 42 (2004) 1013-1025
Chevkinite-(Ce): Crystal structure and the effect of moderate radiation-induced
damage on site-occupancy refinement
Locality: Mongolia
Reported formula: (Ce1.88 La1.01 Nd.61 Pr.19 Sm.06 Gd.03 Ca.27 Y.03 Th.02)
(Fe2+.93 Mn.06 Zr.01) (Ti2.55 Fe3+1.29 Nb.16) Si3.91 O22
Crystal (3an)
_database_code_amcsd 0005959
CELL PARAMETERS: 13.3680 5.7243 11.0410 90.000 100.516 90.000
SPACE GROUP: C2/m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 830.694
Density (g/cm3): 5.156
MAX. ABS. INTENSITY / VOLUME**2: 22.97862807
RIR: 1.451
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
8.14 19.87 10.8556 0 0 1 2
13.47 4.84 6.5717 2 0 0 2
14.43 1.82 6.1402 -2 0 1 2
16.33 36.14 5.4278 0 0 2 2
16.89 1.43 5.2482 1 1 0 4
17.00 5.74 5.2159 2 0 1 2
18.23 49.11 4.8660 -1 1 1 4
19.21 2.22 4.6193 -2 0 2 2
19.31 65.00 4.5955 1 1 1 4
22.69 4.60 3.9183 -1 1 2 4
24.44 1.06 3.6426 1 1 2 4
24.60 20.68 3.6185 0 0 3 2
25.60 20.36 3.4791 3 1 0 4
25.73 36.60 3.4622 -3 1 1 4
28.04 100.00 3.1818 3 1 1 4
28.39 75.54 3.1433 -3 1 2 4
28.93 26.70 3.0860 -1 1 3 4
29.09 37.97 3.0701 -4 0 2 2
29.81 39.90 2.9969 4 0 1 2
30.29 4.49 2.9504 2 0 3 2
31.02 22.13 2.8825 1 1 3 4
31.25 61.42 2.8621 0 2 0 2
32.35 10.08 2.7676 0 2 1 4
32.52 56.20 2.7534 3 1 2 4
33.01 67.40 2.7139 0 0 4 2
33.03 82.32 2.7120 -3 1 3 4
33.32 17.90 2.6891 -4 0 3 2
34.17 11.63 2.6241 2 2 0 4
34.39 13.42 2.6079 4 0 2 2
34.58 6.37 2.5942 -2 2 1 4
35.46 36.17 2.5317 0 2 2 4
35.79 8.38 2.5092 2 2 1 4
36.14 1.42 2.4857 -1 1 4 4
36.95 3.02 2.4330 -2 2 2 4
37.17 2.44 2.4188 -5 1 1 4
37.65 4.75 2.3889 5 1 0 4
38.40 10.20 2.3439 3 1 3 4
38.44 2.05 2.3420 1 1 4 4
39.00 6.64 2.3096 -4 0 4 2
39.02 4.43 2.3082 -3 1 4 4
40.17 6.93 2.2448 0 2 3 4
40.30 12.07 2.2378 4 0 3 2
40.50 10.06 2.2276 -6 0 1 2
41.54 4.52 2.1737 -6 0 2 2
41.68 41.77 2.1670 -4 2 1 4
41.86 22.00 2.1582 4 2 0 4
43.21 10.62 2.0935 -4 2 2 4
43.62 8.07 2.0751 6 0 1 2
43.73 8.57 2.0699 4 2 1 4
43.87 1.21 2.0639 5 1 2 4
43.96 3.20 2.0599 -1 1 5 4
44.08 3.07 2.0543 2 2 3 4
44.25 5.47 2.0467 -6 0 3 2
45.26 15.29 2.0037 3 1 4 4
45.95 19.65 1.9749 -3 1 5 4
46.09 44.53 1.9693 0 2 4 4
46.28 1.81 1.9618 -5 1 4 4
46.33 3.44 1.9598 -4 2 3 4
46.34 15.61 1.9592 -2 2 4 4
46.38 3.03 1.9578 2 0 5 2
46.41 13.25 1.9565 1 1 5 4
47.15 4.02 1.9277 4 2 2 4
48.73 3.73 1.8687 -1 3 1 4
49.06 1.03 1.8570 5 1 3 4
49.19 7.48 1.8522 1 3 1 4
49.77 1.83 1.8320 -2 0 6 2
50.08 12.36 1.8213 2 2 4 4
50.44 1.60 1.8093 0 0 6 2
50.80 5.23 1.7974 -4 2 4 4
51.04 15.58 1.7895 -7 1 2 4
51.20 15.83 1.7841 7 1 0 4
51.86 7.31 1.7629 4 2 3 4
52.02 4.38 1.7579 -6 2 1 4
52.29 2.30 1.7494 3 3 0 4
52.36 4.61 1.7472 -3 3 1 4
52.61 5.49 1.7396 6 2 0 4
52.64 6.48 1.7386 6 0 3 2
52.73 2.80 1.7361 -2 2 5 4
52.84 4.09 1.7326 3 1 5 4
52.89 13.48 1.7311 -6 2 2 4
52.93 4.30 1.7298 0 2 5 4
53.15 11.65 1.7233 -4 0 6 2
53.60 2.82 1.7098 -3 1 6 4
53.67 12.41 1.7077 3 3 1 4
53.75 8.39 1.7055 -6 0 5 2
53.88 7.81 1.7016 -3 3 2 4
54.20 3.80 1.6924 -1 3 3 4
54.63 12.70 1.6800 6 2 1 4
54.77 7.83 1.6762 4 0 5 2
54.87 2.46 1.6733 1 1 6 4
54.98 10.33 1.6702 -8 0 1 2
55.17 8.97 1.6648 -6 2 3 4
55.28 6.53 1.6617 5 1 4 4
55.39 4.32 1.6587 -8 0 2 2
55.48 3.44 1.6564 1 3 3 4
56.39 3.36 1.6315 -4 2 5 4
56.43 10.62 1.6307 3 3 2 4
56.61 9.84 1.6258 -7 1 4 4
56.76 12.91 1.6220 -3 3 3 4
57.07 7.31 1.6139 7 1 2 4
57.19 1.42 1.6107 -8 0 3 2
57.67 2.62 1.5984 4 2 4 4
57.97 3.75 1.5909 6 2 2 4
58.75 1.33 1.5717 -6 2 4 4
59.62 4.89 1.5508 0 0 7 2
60.09 1.24 1.5398 -6 0 6 2
60.29 1.06 1.5350 -8 0 4 2
60.43 1.53 1.5318 3 3 3 4
60.54 7.08 1.5293 0 2 6 4
61.06 5.93 1.5177 3 1 6 4
61.06 3.57 1.5176 -1 1 7 4
61.26 1.07 1.5131 -7 1 5 4
61.87 12.04 1.4996 -3 1 7 4
61.92 1.96 1.4985 8 0 2 2
62.96 2.85 1.4764 -4 2 6 4
63.01 2.24 1.4752 4 0 6 2
63.81 1.49 1.4586 1 1 7 4
64.42 2.40 1.4464 4 2 5 4
64.59 2.20 1.4429 -8 0 5 2
64.67 3.40 1.4412 2 2 6 4
65.19 17.45 1.4311 0 4 0 2
65.56 4.19 1.4239 3 3 4 4
66.11 5.86 1.4135 -3 3 5 4
66.47 3.08 1.4067 1 3 5 4
66.56 1.13 1.4048 -9 1 3 4
66.63 3.52 1.4037 -8 2 3 4
66.68 2.15 1.4027 8 0 3 2
66.97 3.52 1.3973 -7 1 6 4
67.66 4.19 1.3848 8 2 1 4
67.66 5.88 1.3847 7 1 4 4
67.71 1.43 1.3838 0 4 2 4
68.11 2.78 1.3767 6 2 4 4
69.24 2.58 1.3570 -9 1 4 4
69.24 5.88 1.3569 0 0 8 2
69.30 7.00 1.3560 -6 2 6 4
70.21 5.38 1.3406 -7 3 2 4
70.34 4.94 1.3383 7 3 0 4
70.80 1.25 1.3308 0 4 3 4
71.00 2.79 1.3275 8 2 2 4
71.71 1.39 1.3162 3 3 5 4
71.80 1.90 1.3148 -10 0 3 2
72.93 4.10 1.2971 -4 4 2 4
73.31 4.23 1.2914 4 4 1 4
73.32 1.06 1.2911 1 1 8 4
73.50 2.09 1.2885 -8 2 5 4
73.78 2.49 1.2842 5 3 4 4
74.25 1.72 1.2773 10 0 1 2
74.70 6.64 1.2707 6 2 5 4
74.92 4.02 1.2675 -7 3 4 4
75.04 9.06 1.2659 0 4 4 4
75.21 2.26 1.2633 -4 4 3 4
75.32 3.07 1.2618 7 3 2 4
75.48 1.03 1.2596 8 2 3 4
75.83 2.08 1.2546 4 4 2 4
76.07 5.47 1.2512 -6 2 7 4
77.92 3.80 1.2261 0 2 8 4
78.66 1.23 1.2163 -4 2 8 4
78.83 2.53 1.2142 3 3 6 4
78.83 1.20 1.2142 -1 3 7 4
79.20 1.09 1.2094 -10 2 2 4
79.21 4.20 1.2093 -10 2 1 4
79.44 2.74 1.2064 3 1 8 4
79.50 1.77 1.2056 4 4 3 4
79.56 5.28 1.2049 -3 3 7 4
79.63 2.29 1.2040 -6 4 1 4
80.39 3.52 1.1945 -3 1 9 4
80.48 4.17 1.1934 4 2 7 4
80.93 1.68 1.1879 -11 1 2 4
81.11 2.78 1.1857 -11 1 1 4
81.30 3.61 1.1835 -7 1 8 4
81.75 1.46 1.1781 6 4 1 4
81.91 1.16 1.1761 -11 1 3 4
82.19 1.14 1.1728 -6 4 3 4
82.20 2.51 1.1727 7 1 6 4
82.74 1.04 1.1664 10 2 1 4
83.54 1.04 1.1573 1 1 9 4
84.05 1.18 1.1515 -11 1 4 4
84.20 1.48 1.1498 -7 3 6 4
84.80 1.26 1.1433 -8 2 7 4
84.85 2.75 1.1428 7 3 4 4
84.97 1.21 1.1414 11 1 1 4
86.17 3.53 1.1285 -10 2 5 4
86.23 3.47 1.1279 10 2 2 4
86.31 1.22 1.1271 -9 3 4 4
87.10 2.09 1.1189 8 0 6 2
87.35 1.44 1.1164 -11 1 5 4
87.67 1.98 1.1132 8 2 5 4
87.83 1.22 1.1115 0 2 9 4
88.25 1.80 1.1073 -10 0 7 2
88.49 1.93 1.1049 6 4 3 4
88.59 1.02 1.1039 5 1 8 4
88.63 1.02 1.1035 11 1 2 4
88.89 3.70 1.1010 -4 4 6 4
89.31 2.06 1.0968 3 5 1 4
89.37 2.58 1.0963 -6 4 5 4
89.48 1.75 1.0952 -3 5 2 4
89.93 1.24 1.0909 -7 1 9 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.