Tweddillite
Armbruster T, Gnos E, Dixon R, Gutzmer J, Hejny C, Dobelin N, Medenbach O
Mineralogical Magazine 66 (2002) 137-150
Manganvesuvianite and tweddillite, two new Mn3+-silicate minerals
from the Kalahari manganese fields, South Africa
Locality: Kalahari manganese fields, South Africa
_database_code_amcsd 0014561
CELL PARAMETERS: 8.9340 5.7180 10.3250 90.000 114.540 90.000
SPACE GROUP: P2_1/m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 479.805
Density (g/cm3): 3.779
MAX. ABS. INTENSITY / VOLUME**2: 14.32733555
RIR: 1.235
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
9.42 1.48 9.3924 0 0 1 2
11.05 25.60 8.0079 -1 0 1 2
17.14 3.62 5.1738 1 0 1 2
17.45 25.34 5.0820 -1 0 2 2
18.16 1.86 4.8841 0 1 1 4
18.90 1.85 4.6962 0 0 2 2
18.98 10.91 4.6765 1 1 0 4
21.87 4.15 4.0635 2 0 0 2
22.20 9.61 4.0040 -2 0 2 2
23.18 3.85 3.8364 1 1 1 4
23.42 1.05 3.7986 -1 1 2 4
24.53 5.22 3.6291 0 1 2 4
25.30 50.10 3.5198 -2 1 1 4
25.55 1.77 3.4869 1 0 2 2
26.92 5.69 3.3123 2 1 0 4
27.29 10.10 3.2675 2 0 1 2
27.83 1.95 3.2060 -2 0 3 2
28.51 2.60 3.1308 0 0 3 2
30.02 4.11 2.9770 1 1 2 4
30.32 100.00 2.9475 -1 1 3 4
30.49 17.33 2.9321 -3 0 2 2
31.29 35.06 2.8590 0 2 0 2
31.54 8.16 2.8370 2 1 1 4
32.61 34.13 2.7461 0 1 3 4
32.74 1.76 2.7351 0 2 1 4
33.07 13.76 2.7090 3 0 0 2
33.22 28.20 2.6970 1 2 0 4
33.57 1.40 2.6693 -3 0 3 2
34.21 43.85 2.6213 -3 1 1 4
34.37 2.31 2.6091 -3 1 2 4
34.68 26.17 2.5869 2 0 2 2
35.10 6.41 2.5567 -1 0 4 2
35.32 1.66 2.5410 -2 0 4 2
36.04 7.44 2.4918 -1 2 2 4
36.80 13.84 2.4420 0 2 2 4
37.17 17.61 2.4187 -3 1 3 4
38.21 1.99 2.3554 3 0 1 2
38.57 2.99 2.3340 -1 1 4 4
38.70 12.03 2.3267 -2 2 2 4
38.78 3.04 2.3221 -2 1 4 4
38.95 5.51 2.3122 -3 0 4 2
40.39 1.26 2.2331 -4 0 2 2
40.82 4.68 2.2108 1 2 2 4
41.05 8.41 2.1987 -1 2 3 4
41.38 18.30 2.1819 -4 0 1 2
41.58 3.40 2.1721 0 1 4 4
41.75 3.45 2.1633 -4 0 3 2
41.99 19.89 2.1516 2 2 1 4
42.36 17.12 2.1338 -2 2 3 4
42.83 12.70 2.1112 0 2 3 4
43.19 6.15 2.0948 2 0 3 2
43.90 1.24 2.0623 -2 0 5 2
44.25 1.07 2.0470 -3 2 2 4
44.60 2.99 2.0318 4 0 0 2
46.15 1.01 1.9670 2 1 3 4
47.29 5.31 1.9223 1 1 4 4
47.39 11.22 1.9182 2 2 2 4
47.43 1.05 1.9169 1 2 3 4
47.66 2.64 1.9079 -1 1 5 4
47.72 2.24 1.9058 -1 2 4 4
47.90 15.16 1.8993 -2 2 4 4
47.92 5.45 1.8984 3 1 2 4
48.46 1.82 1.8785 0 0 5 2
49.09 2.52 1.8557 1 3 0 4
50.28 2.95 1.8145 0 2 4 4
51.28 5.47 1.7816 -5 0 2 2
51.96 4.67 1.7599 -4 2 2 4
52.18 6.10 1.7530 -2 3 1 4
52.49 1.11 1.7434 2 0 4 2
52.78 2.09 1.7345 -4 2 1 4
53.07 1.00 1.7256 2 3 0 4
53.26 2.97 1.7199 -2 0 6 2
53.31 6.64 1.7186 -4 1 5 4
53.90 1.53 1.7010 -5 1 2 4
54.14 1.22 1.6940 -3 0 6 2
54.52 1.09 1.6832 1 0 5 2
54.93 9.36 1.6715 -1 0 6 2
55.07 2.73 1.6676 2 1 4 4
55.09 11.68 1.6672 -1 3 3 4
55.30 3.78 1.6612 1 2 4 4
55.48 4.11 1.6561 4 2 0 4
55.60 9.12 1.6529 -5 1 1 4
55.82 2.83 1.6470 -2 1 6 4
55.84 1.27 1.6464 2 3 1 4
55.87 5.79 1.6457 3 2 2 4
56.08 14.51 1.6399 -4 2 4 4
56.16 2.73 1.6377 -5 1 4 4
56.53 5.68 1.6280 0 3 3 4
56.67 1.15 1.6242 -3 1 6 4
57.04 8.22 1.6147 1 1 5 4
57.49 9.53 1.6030 -4 0 6 2
57.58 9.06 1.6008 -3 3 1 4
57.69 1.07 1.5980 -3 3 2 4
58.78 6.94 1.5709 4 1 2 4
59.09 2.60 1.5635 5 1 0 4
59.60 2.69 1.5512 -3 3 3 4
59.98 1.13 1.5422 -5 1 5 4
62.38 2.41 1.4885 2 2 4 4
62.88 2.24 1.4780 -5 2 1 4
63.08 5.30 1.4738 -2 2 6 4
63.40 7.22 1.4671 -5 2 4 4
63.45 3.86 1.4661 -6 0 4 2
63.87 4.65 1.4574 -3 2 6 4
64.18 1.73 1.4512 5 1 1 4
64.18 1.08 1.4512 4 0 3 2
64.82 4.44 1.4383 2 1 5 4
65.27 16.65 1.4295 0 4 0 2
65.35 1.10 1.4280 -6 1 2 4
65.60 1.91 1.4231 -3 1 7 4
65.64 1.52 1.4224 -2 1 7 4
65.84 8.60 1.4185 4 2 2 4
67.20 2.10 1.3930 1 3 4 4
67.67 1.30 1.3845 -6 1 1 4
67.81 1.42 1.3820 -4 1 7 4
68.31 3.49 1.3731 0 2 6 4
68.48 1.54 1.3702 5 0 2 2
72.06 3.43 1.3106 -6 2 2 4
72.08 1.86 1.3103 -5 2 6 4
72.11 1.63 1.3098 3 0 5 2
72.14 2.26 1.3094 -4 3 5 4
72.45 2.79 1.3045 -6 2 4 4
73.13 3.98 1.2940 4 2 3 4
73.17 1.97 1.2934 4 0 4 2
73.74 2.18 1.2849 -3 4 2 4
74.09 3.98 1.2796 -5 3 1 4
74.18 1.48 1.2783 -2 0 8 2
74.28 1.10 1.2769 -2 3 6 4
74.29 1.10 1.2768 -6 2 1 4
75.05 3.73 1.2656 -6 2 5 4
75.15 1.80 1.2643 3 4 0 4
75.33 3.27 1.2617 1 3 5 4
76.07 4.75 1.2512 2 4 2 4
76.32 1.09 1.2477 -1 4 4 4
76.85 2.58 1.2404 4 3 2 4
77.12 1.12 1.2368 5 3 0 4
78.53 2.50 1.2180 -6 1 7 4
78.70 1.62 1.2159 -3 4 4 4
78.79 2.01 1.2147 0 2 7 4
80.29 2.64 1.1957 -4 4 1 4
81.68 1.01 1.1789 5 3 1 4
82.26 1.98 1.1720 2 3 5 4
83.65 1.38 1.1561 -6 0 8 2
84.19 1.81 1.1501 0 1 8 4
85.19 1.08 1.1390 3 1 6 4
85.31 1.66 1.1378 7 1 0 4
85.54 1.13 1.1353 -1 2 8 4
86.58 2.08 1.1243 -5 2 8 4
86.82 2.27 1.1218 -7 1 7 4
89.07 1.35 1.0992 1 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.