Perkovaite
Krivovichev S V, Shcherbakova E P, Nishanbaev T P
The Canadian Mineralogist 48 (2010) 1469-1475
The crystal structure of beta-CaMg2(SO4)3, a mineral phase from coal dumps
of the Chelyabinsk coal basin, Russia
Locality: coal dumps of the Chelyabinsk coal basin, Russia
_database_code_amcsd 0018301
CELL PARAMETERS: 16.5810 16.5810 7.3480 90.000 90.000 120.000
SPACE GROUP: P6_3
X-RAY WAVELENGTH: 1.541838
Cell Volume: 1749.529
Density (g/cm3): 3.013
MAX. ABS. INTENSITY / VOLUME**2: 26.72948014
RIR: 2.888
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
6.16 30.57 14.3596 1 0 0 6
10.67 8.50 8.2905 1 1 0 6
12.33 8.80 7.1798 2 0 0 6
16.33 3.13 5.4274 1 2 0 6
16.33 3.00 5.4274 2 1 0 6
18.54 2.30 4.7865 3 0 0 6
21.44 10.22 4.1452 2 2 0 6
22.32 1.28 3.9826 1 3 0 6
22.32 1.03 3.9826 3 1 0 6
24.22 2.57 3.6740 0 0 2 1
24.66 100.00 3.6104 2 2 1 6
24.80 4.25 3.5899 4 0 0 6
25.02 1.96 3.5593 1 0 2 6
26.54 1.71 3.3589 1 1 2 6
27.07 1.00 3.2943 2 3 0 6
27.27 2.76 3.2707 2 0 2 6
27.66 6.58 3.2255 4 0 1 6
29.36 1.16 3.0425 1 2 2 6
29.36 1.47 3.0425 2 1 2 6
30.68 1.48 2.9144 3 0 2 6
32.57 45.78 2.7495 2 2 2 6
33.01 14.12 2.7137 4 2 0 6
33.18 1.01 2.7004 1 3 2 6
35.26 1.43 2.5456 2 4 1 6
37.58 14.54 2.3933 6 0 0 6
38.32 1.01 2.3490 1 1 3 6
39.60 6.50 2.2756 6 0 1 6
41.36 2.61 2.1828 2 4 2 6
41.36 7.16 2.1828 4 2 2 6
42.89 4.43 2.1087 2 2 3 6
44.79 2.57 2.0233 4 0 3 6
45.22 1.04 2.0053 6 0 2 6
49.63 4.35 1.8370 0 0 4 1
50.17 3.62 1.8182 2 4 3 6
50.56 12.69 1.8052 4 4 2 6
51.34 1.89 1.7797 2 0 4 6
52.25 1.04 1.7507 2 6 2 6
52.48 1.28 1.7437 8 0 1 6
56.25 1.82 1.6353 4 0 4 6
57.32 2.10 1.6073 6 4 1 6
58.32 1.29 1.5822 4 4 3 6
58.95 4.85 1.5668 2 8 0 6
59.86 4.36 1.5451 6 2 3 6
60.41 1.19 1.5323 2 8 1 6
60.41 1.18 1.5323 8 2 1 6
63.88 4.47 1.4572 6 0 4 6
64.68 1.85 1.4412 2 8 2 6
64.68 3.77 1.4412 8 2 2 6
67.64 2.38 1.3851 2 2 5 6
67.83 2.05 1.3817 6 6 0 6
69.63 1.03 1.3502 6 2 4 6
71.48 1.28 1.3198 8 2 3 6
74.56 1.07 1.2728 8 4 2 6
80.22 1.17 1.1966 12 0 0 6
88.56 1.47 1.1042 6 6 4 6
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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.