Menezesite
Atencio D, Coutinho J M V, Doriguetto A C, Mascarenhas Y P, Ellena J, Ferrari V C
American Mineralogist 93 (2008) 81-87
Menezesite, the first natural heteropolyniobate, from Cajati, Sao Paulo, Brazil:
description and crystal structure
Locality: Jacupiranga mine, Cajati county, Sao Paulo, Brazil
_database_code_amcsd 0004492
CELL PARAMETERS: 13.0170 13.0170 13.0170 90.000 90.000 90.000
SPACE GROUP: Im3
X-RAY WAVELENGTH: 1.541838
Cell Volume: 2205.630
Density (g/cm3): 4.146
MAX. ABS. INTENSITY / VOLUME**2: 75.74536459
RIR: 5.949
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
9.61 100.00 9.2044 1 1 0 12
13.61 1.38 6.5085 2 0 0 6
16.68 2.27 5.3142 2 1 1 24
19.29 4.32 4.6022 2 2 0 12
21.59 1.51 4.1163 3 0 1 12
21.59 7.06 4.1163 3 1 0 12
23.68 6.03 3.7577 2 2 2 8
25.61 9.48 3.4789 3 2 1 24
25.61 6.25 3.4789 3 1 2 24
27.41 19.82 3.2543 4 0 0 6
29.10 17.24 3.0681 4 1 1 24
30.72 29.18 2.9107 4 0 2 12
30.72 11.69 2.9107 4 2 0 12
32.26 11.32 2.7752 3 3 2 24
33.73 34.31 2.6571 4 2 2 24
35.15 1.09 2.5528 5 1 0 12
35.15 2.54 2.5528 4 3 1 24
35.15 1.39 2.5528 4 1 3 24
37.86 1.78 2.3766 5 2 1 24
40.40 2.93 2.2324 5 3 0 12
40.40 1.47 2.2324 4 3 3 24
42.83 2.49 2.1116 5 3 2 24
42.83 9.13 2.1116 5 2 3 24
47.37 1.53 1.9193 6 1 3 24
49.51 1.03 1.8409 7 1 0 12
50.56 1.16 1.8051 6 0 4 12
50.56 9.81 1.8051 6 4 0 12
51.60 1.22 1.7714 5 5 2 24
51.60 2.88 1.7714 6 3 3 24
52.62 18.58 1.7395 6 2 4 24
52.62 6.36 1.7395 6 4 2 24
55.59 1.59 1.6532 6 1 5 24
56.56 6.96 1.6271 8 0 0 6
57.52 1.18 1.6023 5 5 4 24
57.52 2.22 1.6023 7 1 4 24
61.26 1.94 1.5132 7 4 3 24
61.26 1.11 1.5132 7 0 5 12
63.97 2.42 1.4553 8 0 4 12
63.97 1.61 1.4553 8 4 0 12
65.75 3.89 1.4203 8 2 4 24
67.50 3.00 1.3876 6 6 4 24
68.37 1.17 1.3721 8 5 1 24
71.79 1.62 1.3149 9 4 1 24
79.27 1.78 1.2086 8 6 4 24
80.90 1.99 1.1883 10 4 2 24
84.14 1.90 1.1506 8 8 0 12
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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.