Fredrikssonite
Burns P C, Cooper M A, Hawthorne F C
The Canadian Mineralogist 32 (1994) 397-403
Jahn-Teller-distorted MnO6 octahedra in fredrikssonite, the fourth polymorph
of Mg2Mn(BO3)O2
_database_code_amcsd 0005368
CELL PARAMETERS: 9.1980 12.5280 2.9650 90.000 90.000 90.000
SPACE GROUP: Pbam
X-RAY WAVELENGTH: 1.541838
Cell Volume: 341.664
Density (g/cm3): 3.795
MAX. ABS. INTENSITY / VOLUME**2: 15.26242075
RIR: 1.310
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
14.14 2.30 6.2640 0 2 0 2
17.13 100.00 5.1774 1 2 0 4
19.30 5.94 4.5990 2 0 0 2
23.39 2.92 3.8025 1 3 0 4
28.50 7.09 3.1320 0 4 0 2
30.01 5.29 2.9781 3 1 0 4
30.14 19.91 2.9650 0 0 1 2
30.14 5.29 2.9648 1 4 0 4
32.51 15.27 2.7538 3 2 0 4
32.52 3.06 2.7530 1 1 1 8
33.44 3.17 2.6799 0 2 1 4
34.65 79.65 2.5887 2 4 0 4
36.04 72.49 2.4920 2 0 1 4
36.35 1.21 2.4714 3 3 0 4
36.77 1.90 2.4441 2 1 1 8
38.50 3.85 2.3382 1 3 1 8
38.89 4.62 2.3155 2 2 1 8
39.18 4.02 2.2995 4 0 0 2
41.02 23.21 2.2002 2 5 0 4
41.96 12.08 2.1532 0 4 1 4
42.23 5.25 2.1399 2 3 1 8
43.05 15.71 2.1012 3 1 1 8
44.49 15.15 2.0362 1 6 0 4
44.92 53.32 2.0178 3 2 1 8
46.57 10.86 1.9500 2 4 1 8
46.83 2.83 1.9401 3 5 0 4
47.84 3.85 1.9012 2 6 0 4
47.92 18.83 1.8984 3 3 1 8
50.21 1.44 1.8171 4 0 1 4
51.74 1.69 1.7669 2 5 1 8
51.80 7.36 1.7651 5 2 0 4
51.89 2.00 1.7621 3 4 1 8
52.06 1.84 1.7568 1 7 0 4
52.43 7.50 1.7451 4 2 1 8
53.06 2.74 1.7258 3 6 0 4
54.68 9.34 1.6785 1 6 1 8
57.59 3.13 1.6005 2 6 1 8
58.75 28.20 1.5717 4 4 1 8
58.98 6.43 1.5660 0 8 0 2
59.92 2.06 1.5438 1 8 0 4
61.10 17.72 1.5167 5 2 1 8
61.34 20.08 1.5114 1 7 1 8
62.24 7.47 1.4915 3 6 1 8
62.65 2.60 1.4829 5 5 0 4
62.67 20.25 1.4825 0 0 2 2
63.55 12.75 1.4640 5 3 1 8
65.49 4.63 1.4252 1 2 2 8
67.66 3.78 1.3847 0 8 1 4
67.91 1.14 1.3803 5 6 0 4
68.10 12.38 1.3769 6 4 0 4
68.53 2.73 1.3693 1 8 1 8
68.96 2.41 1.3618 6 0 1 4
71.10 4.71 1.3259 2 8 1 8
72.25 1.72 1.3077 6 5 0 4
72.40 2.63 1.3054 3 2 2 8
73.11 3.68 1.2944 4 8 0 4
73.63 13.80 1.2865 2 4 2 8
73.66 2.95 1.2860 7 2 0 4
75.91 1.01 1.2534 7 3 0 4
76.06 1.45 1.2514 5 6 1 8
76.24 2.07 1.2488 6 4 1 8
76.44 1.79 1.2460 4 0 2 4
77.66 3.33 1.2295 2 5 2 8
80.07 3.71 1.1985 1 6 2 8
80.28 1.08 1.1958 7 1 1 8
81.07 1.76 1.1862 4 8 1 8
82.51 1.16 1.1691 2 6 2 8
83.33 1.54 1.1597 3 10 0 4
84.21 5.05 1.1497 8 0 0 2
85.55 2.56 1.1352 5 2 2 8
86.56 1.14 1.1246 3 6 2 8
88.98 3.48 1.1001 4 10 0 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.