Maghrebite
Meisser N, Brugger J, Krivovichev S, Armbruster T, Favreau G
European Journal of Mineralogy 24 (2012) 717-726
Description and crystal structure of maghrebite, MgAl2(AsO4)2(OH)2*8H2O,
from Aghbar, Anti-Atlas, Morocco: first arsenate in the laueite mineral group
Locality: Aghbar, Anti-Atlas, Morocco
_database_code_amcsd 0019348
CELL PARAMETERS: 5.4363 10.5000 7.0750 97.701 110.295 102.021
SPACE GROUP: P-1
X-RAY WAVELENGTH: 1.541838
Cell Volume: 360.987
Density (g/cm3): 2.457
MAX. ABS. INTENSITY / VOLUME**2: 17.72345332
RIR: 2.349
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
8.84 100.00 10.0068 0 1 0 2
13.70 61.69 6.4659 0 0 1 2
17.93 9.26 4.9474 0 1 1 2
17.99 30.58 4.9316 -1 0 1 2
18.09 17.51 4.9036 1 0 0 2
19.22 11.17 4.6184 -1 1 1 2
19.85 5.51 4.4737 0 -2 1 2
21.62 9.85 4.1103 -1 2 0 2
22.27 2.06 3.9921 1 1 0 2
23.98 2.67 3.7109 -1 2 1 2
26.67 6.75 3.3425 -1 -2 1 2
26.73 5.47 3.3356 0 3 0 2
26.73 10.20 3.3352 1 0 1 2
27.19 12.78 3.2800 0 -3 1 2
27.28 5.28 3.2686 1 -2 1 2
27.59 24.76 3.2329 0 0 2 2
27.60 6.90 3.2318 -1 -1 2 2
27.92 18.47 3.1952 -1 3 0 2
28.39 6.04 3.1435 -1 1 2 2
28.77 6.52 3.1027 1 2 0 2
29.33 6.97 3.0454 0 -2 2 2
30.71 10.18 2.9111 1 1 1 2
30.76 14.65 2.9071 -1 3 1 2
30.92 4.10 2.8920 0 1 2 2
31.37 6.88 2.8516 -1 -2 2 2
31.69 6.04 2.8238 1 -3 1 2
32.86 4.46 2.7252 0 3 1 2
33.05 3.53 2.7108 -2 1 1 2
33.71 1.97 2.6585 -2 0 1 2
33.98 16.59 2.6383 -1 -3 1 2
34.82 3.02 2.5764 -2 2 1 2
35.22 4.60 2.5482 -2 1 0 2
35.44 4.92 2.5326 0 -4 1 2
35.54 1.13 2.5263 -1 4 0 2
36.11 5.95 2.4875 -2 2 0 2
36.44 1.37 2.4658 -2 0 2 2
36.50 2.72 2.4620 1 3 0 2
36.61 6.18 2.4543 -2 1 2 2
36.65 5.19 2.4518 2 0 0 2
37.18 3.81 2.4185 1 -1 2 2
37.72 1.74 2.3847 1 -2 2 2
38.50 6.13 2.3382 -2 -1 2 2
38.84 2.58 2.3184 1 0 2 2
38.90 1.10 2.3153 -1 3 2 2
39.00 1.44 2.3092 -2 2 2 2
39.19 1.97 2.2990 -2 3 0 2
40.41 2.18 2.2321 1 -3 2 2
40.69 4.04 2.2176 -1 1 3 2
41.53 2.47 2.1744 0 4 1 2
41.92 1.68 2.1553 0 0 3 2
42.44 2.52 2.1300 2 -2 1 2
43.12 2.49 2.0977 0 3 2 2
43.81 1.94 2.0666 1 3 1 2
43.92 2.34 2.0616 -2 0 3 2
43.93 2.02 2.0611 -1 5 0 2
44.48 2.26 2.0368 2 -3 1 2
44.67 2.31 2.0286 -1 2 3 2
44.97 1.58 2.0160 1 4 0 2
45.03 3.50 2.0131 -2 -1 3 2
45.24 3.78 2.0042 1 -5 1 2
47.44 1.25 1.9166 -2 2 3 2
47.77 2.51 1.9040 0 -5 2 2
49.68 1.51 1.8352 0 2 3 2
50.38 1.81 1.8114 -1 -4 3 2
50.66 2.67 1.8019 1 -1 3 2
50.93 1.56 1.7930 0 4 2 2
51.72 3.67 1.7675 -1 -1 4 2
52.04 1.08 1.7572 1 -3 3 2
52.15 1.15 1.7540 -3 0 1 2
53.02 1.42 1.7271 -3 3 1 2
53.48 2.35 1.7133 1 -6 1 2
54.42 1.21 1.6860 -1 5 2 2
54.54 2.84 1.6825 -3 -1 2 2
54.66 1.24 1.6791 -3 3 2 2
54.94 1.45 1.6712 -2 -4 2 2
54.98 1.21 1.6702 -2 -1 4 2
55.06 4.91 1.6678 0 6 0 2
55.07 3.33 1.6676 2 0 2 2
55.41 1.95 1.6583 -3 3 0 2
55.88 1.70 1.6454 -2 1 4 2
56.08 1.41 1.6400 0 -6 2 2
56.10 1.37 1.6395 1 1 3 2
56.29 2.19 1.6343 2 -4 2 2
56.36 1.08 1.6324 -1 6 1 2
56.63 1.60 1.6253 -3 4 1 2
57.13 1.66 1.6123 -3 2 3 2
57.15 1.22 1.6117 -1 -5 3 2
57.70 1.86 1.5976 -2 6 0 2
58.45 1.63 1.5791 -2 -4 3 2
58.74 3.02 1.5717 -2 2 4 2
58.83 1.55 1.5698 2 1 2 2
59.05 1.05 1.5643 -2 6 1 2
59.70 1.09 1.5489 2 3 1 2
60.17 1.95 1.5379 2 -6 1 2
60.42 1.12 1.5322 -1 -6 1 2
60.58 1.17 1.5285 2 -5 2 2
60.83 1.20 1.5227 0 -4 4 2
62.77 1.26 1.4803 -2 -5 2 2
63.92 1.69 1.4565 3 0 1 2
64.43 1.12 1.4460 0 2 4 2
65.46 2.11 1.4258 -2 -4 4 2
65.53 1.44 1.4244 1 -1 4 2
66.19 2.00 1.4119 2 -6 2 2
69.33 1.41 1.3554 -4 2 2 2
69.39 1.86 1.3543 -4 1 2 2
70.33 1.24 1.3385 1 6 1 2
71.94 1.03 1.3125 -3 -4 3 2
72.28 1.38 1.3072 -2 2 5 2
77.52 1.32 1.2314 -1 5 4 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.