Biotite
Takeda H, Ross M
American Mineralogist 60 (1975) 1030-1040
Mica polytypism: Dissimilarities in the crystal structures of coexisting 1M and
2M1 biotite
_database_code_amcsd 0000479
CELL PARAMETERS: 5.3290 9.2340 20.0980 90.000 95.090 90.000
SPACE GROUP: C2/c
X-RAY WAVELENGTH: 1.541838
Cell Volume: 985.082
Density (g/cm3): 2.686
MAX. ABS. INTENSITY / VOLUME**2: 10.63370544
RIR: 1.289
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
8.83 100.00 10.0094 0 0 2 2
17.72 6.70 5.0047 0 0 4 2
19.22 3.73 4.6170 0 2 0 2
19.29 22.10 4.6019 1 1 0 4
19.46 6.78 4.5622 -1 1 1 4
19.73 13.38 4.4989 0 2 1 4
20.13 2.47 4.4114 1 1 1 4
20.61 3.15 4.3088 -1 1 2 4
22.61 1.06 3.9323 -1 1 3 4
23.43 7.79 3.7968 0 2 3 4
24.33 4.41 3.6591 1 1 3 4
25.26 18.54 3.5253 -1 1 4 4
26.26 7.05 3.3935 0 2 4 4
26.72 41.34 3.3365 0 0 6 2
27.32 21.41 3.2647 1 1 4 4
28.40 6.57 3.1426 -1 1 5 4
29.53 16.29 3.0248 0 2 5 4
30.71 4.32 2.9117 1 1 5 4
31.90 8.70 2.8057 -1 1 6 4
33.13 1.84 2.7043 0 2 6 4
33.76 6.59 2.6549 -1 3 1 4
33.77 3.46 2.6540 2 0 0 2
34.17 31.92 2.6242 1 3 1 4
34.18 15.85 2.6237 -2 0 2 2
34.39 3.08 2.6076 1 1 6 4
35.75 6.25 2.5119 -1 3 3 4
35.76 3.24 2.5108 2 0 2 2
35.89 1.49 2.5023 0 0 8 2
36.90 27.68 2.4360 1 3 3 4
36.90 13.96 2.4359 -2 0 4 2
39.06 1.40 2.3061 -2 2 1 4
39.29 1.63 2.2933 0 4 1 4
39.78 2.13 2.2662 2 2 1 4
39.81 5.94 2.2641 -1 3 5 4
39.83 2.90 2.2631 2 0 4 2
40.47 2.14 2.2287 -2 2 3 4
41.39 1.49 2.1816 0 4 3 4
41.56 7.18 2.1731 -2 0 6 2
41.56 14.22 2.1730 1 3 5 4
45.30 7.35 2.0019 0 0 10 2
45.50 5.69 1.9935 -1 3 7 4
45.52 2.78 1.9927 2 0 6 2
47.69 2.07 1.9071 -2 0 8 2
47.69 4.06 1.9069 1 3 7 4
50.83 1.25 1.7963 0 4 7 4
52.41 1.21 1.7457 -1 3 9 4
52.46 1.05 1.7442 1 5 0 4
52.47 1.14 1.7440 -2 4 1 4
52.96 1.42 1.7289 2 2 7 4
54.37 1.57 1.6875 3 1 2 4
54.95 7.45 1.6711 -2 0 10 2
54.95 14.80 1.6709 1 3 9 4
55.26 2.28 1.6622 -1 5 4 4
56.36 1.21 1.6324 1 5 4 4
56.36 2.21 1.6323 -2 4 5 4
57.63 1.46 1.5994 -3 1 6 4
57.65 1.69 1.5990 3 1 4 4
59.04 1.02 1.5646 -1 5 6 4
59.06 1.01 1.5642 2 4 5 4
60.12 8.68 1.5390 0 6 0 2
60.14 17.64 1.5385 -3 3 1 4
60.31 8.55 1.5346 -1 3 11 4
60.33 4.35 1.5341 2 0 10 2
60.90 2.63 1.5211 0 6 2 4
60.92 2.75 1.5207 -3 3 3 4
60.93 2.73 1.5206 3 3 1 4
63.15 1.83 1.4723 1 3 11 4
65.25 1.44 1.4299 0 0 14 2
69.09 10.29 1.3595 -1 3 13 4
69.11 5.16 1.3591 2 0 12 2
70.77 2.62 1.3314 2 6 0 4
70.79 1.37 1.3310 -4 0 2 2
70.98 1.23 1.3278 -2 2 13 4
71.01 4.96 1.3275 -2 6 2 4
71.03 2.48 1.3270 4 0 0 2
72.04 1.90 1.3109 0 6 8 4
72.05 1.81 1.3108 -3 3 9 4
72.07 1.79 1.3104 3 3 7 4
72.67 4.28 1.3011 -2 6 4 4
72.71 2.16 1.3005 4 0 2 2
74.00 1.39 1.2810 0 4 13 4
74.57 2.63 1.2726 2 6 4 4
74.58 1.25 1.2724 -4 0 6 2
76.42 1.11 1.2463 -4 2 5 4
77.14 1.14 1.2365 2 2 13 4
77.33 1.09 1.2339 1 7 4 4
80.13 1.10 1.1977 -2 6 8 4
85.84 4.14 1.1321 -2 6 10 4
85.89 2.08 1.1315 4 0 8 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.