Poldervaartite
Dai Y S, Harlow G E, McGhie A R
American Mineralogist 78 (1993) 1082-1087
Poldervaartite, Ca(Ca0.5Mn0.5)(SiO3OH)(OH), a new acid nesosilicate from the
Kalahari manganese field, South Africa: Crystal structure and description
_database_code_amcsd 0001615
CELL PARAMETERS: 9.3980 9.1390 10.5350 90.000 90.000 90.000
SPACE GROUP: Pbca
X-RAY WAVELENGTH: 1.541838
Cell Volume: 904.833
Density (g/cm3): 2.865
MAX. ABS. INTENSITY / VOLUME**2: 10.23687396
RIR: 1.164
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
15.93 1.44 5.5637 1 1 1 8
16.83 13.03 5.2675 0 0 2 2
19.32 2.56 4.5950 1 0 2 4
19.43 1.81 4.5695 0 2 0 2
21.19 20.47 4.1921 0 2 1 4
21.26 23.00 4.1790 2 1 0 4
21.65 5.84 4.1053 1 1 2 8
22.89 17.70 3.8845 2 1 1 8
23.23 2.87 3.8285 1 2 1 8
25.40 24.27 3.5065 2 0 2 4
25.81 2.47 3.4517 0 2 2 4
27.22 9.36 3.2760 2 2 0 4
27.24 10.35 3.2738 2 1 2 8
27.53 100.00 3.2401 1 2 2 8
28.53 1.03 3.1282 2 2 1 8
28.85 2.00 3.0951 1 1 3 8
31.36 31.83 2.8527 3 1 1 8
32.03 21.50 2.7941 1 3 1 8
32.15 9.67 2.7844 0 2 3 4
32.18 3.56 2.7818 2 2 2 8
33.28 10.16 2.6925 3 0 2 4
33.33 1.81 2.6885 2 1 3 8
33.57 11.38 2.6697 1 2 3 8
34.04 19.73 2.6337 0 0 4 2
34.73 29.98 2.5827 3 1 2 8
35.11 18.36 2.5562 2 3 0 4
35.35 1.16 2.5390 1 3 2 8
35.39 2.56 2.5360 1 0 4 4
35.78 20.22 2.5094 3 2 1 8
36.16 4.20 2.4841 2 3 1 8
36.78 6.29 2.4437 1 1 4 8
37.55 49.74 2.3954 2 2 3 8
38.82 3.75 2.3197 3 2 2 8
39.17 5.38 2.2997 2 3 2 8
39.21 1.84 2.2975 2 0 4 4
39.49 6.41 2.2819 0 2 4 4
39.80 1.15 2.2648 3 1 3 8
40.40 1.45 2.2328 0 4 1 4
40.56 6.71 2.2242 4 1 1 8
40.69 2.48 2.2174 1 2 4 8
42.11 6.91 2.1457 4 0 2 4
42.26 1.51 2.1385 3 3 1 8
43.16 2.93 2.0961 0 4 2 4
43.30 6.70 2.0895 4 2 0 4
43.81 9.49 2.0666 2 3 3 8
44.07 3.41 2.0547 2 4 0 4
44.19 2.55 2.0496 4 2 1 8
44.27 13.73 2.0458 1 4 2 8
44.93 2.28 2.0174 3 3 2 8
44.95 2.10 2.0167 2 4 1 8
44.97 1.27 2.0159 3 0 4 4
46.11 3.12 1.9686 3 1 4 8
46.60 1.68 1.9491 1 3 4 8
46.77 9.08 1.9423 4 2 2 8
47.48 8.96 1.9151 0 4 3 4
47.50 2.60 1.9143 2 4 2 8
47.62 4.34 1.9096 4 1 3 8
48.51 1.28 1.8765 1 4 3 8
48.56 2.56 1.8749 1 2 5 8
48.96 2.17 1.8604 4 3 0 4
49.41 1.87 1.8444 3 2 4 8
49.70 1.60 1.8343 2 3 4 8
49.77 5.46 1.8321 4 3 1 8
50.85 1.92 1.7957 4 2 3 8
51.53 10.72 1.7735 2 4 3 8
51.57 14.43 1.7721 2 2 5 8
51.63 6.16 1.7703 5 0 2 4
52.09 3.67 1.7558 0 0 6 2
52.17 1.30 1.7533 4 0 4 4
52.66 1.14 1.7380 5 1 2 8
53.06 2.57 1.7260 1 0 6 4
53.06 2.94 1.7259 0 4 4 4
53.20 2.20 1.7219 4 1 4 8
53.35 8.36 1.7172 3 1 5 8
53.79 6.63 1.7042 1 3 5 8
53.99 5.60 1.6984 1 5 2 8
54.02 2.80 1.6975 1 4 4 8
54.07 3.18 1.6960 1 1 6 8
54.59 2.26 1.6812 3 3 4 8
55.68 6.94 1.6507 5 2 2 8
55.90 3.97 1.6448 2 0 6 4
55.93 2.51 1.6440 4 3 3 8
56.15 10.85 1.6380 4 4 0 4
56.19 4.65 1.6369 4 2 4 8
56.34 2.18 1.6329 3 2 5 8
56.61 2.19 1.6259 2 3 5 8
56.83 1.32 1.6200 2 4 4 8
56.88 1.06 1.6188 2 1 6 8
57.04 5.50 1.6146 1 2 6 8
57.70 4.25 1.5977 1 5 3 8
58.35 5.90 1.5815 5 3 1 8
58.97 2.76 1.5663 6 0 0 2
59.18 11.59 1.5613 3 5 1 8
59.76 2.93 1.5476 2 2 6 8
60.40 1.74 1.5327 2 5 3 8
60.49 2.82 1.5306 5 3 2 8
60.51 6.31 1.5299 5 0 4 4
60.81 3.36 1.5232 0 6 0 2
61.45 5.90 1.5089 5 1 4 8
62.61 1.78 1.4836 4 2 5 8
62.65 1.87 1.4828 1 5 4 8
63.21 4.26 1.4711 2 4 5 8
63.39 3.19 1.4673 6 2 1 8
63.59 3.11 1.4632 0 6 2 4
64.29 1.24 1.4489 2 6 0 4
64.45 1.57 1.4458 1 6 2 8
64.74 4.36 1.4399 3 5 3 8
65.28 1.11 1.4293 4 5 1 8
65.97 1.20 1.4160 2 1 7 8
67.32 2.21 1.3909 4 4 4 8
68.76 2.60 1.3652 6 2 3 8
69.41 1.77 1.3541 3 5 4 8
69.87 1.98 1.3462 6 0 4 4
69.99 3.73 1.3442 4 2 6 8
70.51 1.24 1.3356 1 3 7 8
72.48 1.72 1.3041 1 0 8 4
72.71 1.34 1.3005 3 2 7 8
73.19 1.71 1.2932 4 4 5 8
73.33 1.25 1.2911 1 1 8 8
73.91 1.18 1.2823 6 4 1 8
74.16 1.42 1.2786 7 2 1 8
75.07 1.90 1.2654 0 2 8 4
76.07 1.87 1.2513 7 2 2 8
76.22 1.18 1.2490 2 7 1 8
76.71 1.12 1.2424 7 1 3 8
77.23 2.16 1.2353 5 2 6 8
78.36 3.72 1.2203 7 3 1 8
80.13 1.23 1.1977 4 4 6 8
81.08 2.45 1.1860 7 1 4 8
81.23 1.77 1.1842 2 7 3 8
82.03 1.76 1.1748 3 7 2 8
83.31 1.55 1.1599 6 4 4 8
83.78 3.32 1.1546 5 6 2 8
84.14 1.51 1.1506 7 4 1 8
84.14 2.50 1.1506 0 6 6 4
84.30 2.09 1.1487 4 0 8 4
85.02 1.96 1.1409 0 4 8 4
85.61 1.28 1.1346 4 7 1 8
85.79 1.83 1.1326 1 4 8 8
86.24 2.22 1.1279 2 5 7 8
87.12 1.24 1.1187 5 4 6 8
88.39 2.07 1.1059 8 1 3 8
88.59 1.19 1.1039 2 8 1 8
89.39 2.31 1.0961 5 3 7 8
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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.