Peprossiite-(Ce)
Callegari A, Caucia F, Mazzi F, Oberti R, Ottolini L, Ungaretti L
American Mineralogist 85 (2000) 586-593
The crystal structure of peprossiite-(Ce), and anhydrous REE and Al mica-like borate
with square-pyramidal coordination for Al
Sample: Pep1
_database_code_amcsd 0002424
CELL PARAMETERS: 4.6120 4.6120 9.3740 90.000 90.000 120.000
SPACE GROUP: P-62m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 172.677
Density (g/cm3): 3.745
MAX. ABS. INTENSITY / VOLUME**2: 35.10657860
RIR: 3.052
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
9.43 35.24 9.3740 0 0 1 2
18.93 19.52 4.6870 0 0 2 2
22.26 5.04 3.9941 1 0 0 6
24.22 100.00 3.6745 1 0 1 12
29.38 88.75 3.0400 1 0 2 12
36.51 35.59 2.4610 1 0 3 12
38.41 2.21 2.3435 0 0 4 2
39.06 32.72 2.3060 1 1 0 3
40.28 8.83 2.2392 1 1 1 6
43.75 10.80 2.0691 1 1 2 6
44.84 27.23 2.0213 1 0 4 12
45.42 16.38 1.9971 2 0 0 6
46.49 19.19 1.9532 2 0 1 12
48.56 3.48 1.8748 0 0 5 2
49.10 40.63 1.8554 1 1 3 6
49.62 16.71 1.8372 2 0 2 12
54.03 3.94 1.6971 1 0 5 12
55.94 4.61 1.6437 1 1 4 6
59.13 4.85 1.5623 0 0 6 2
60.95 7.69 1.5200 2 0 4 12
61.42 3.60 1.5096 2 1 0 6
62.30 11.65 1.4904 2 1 1 12
63.99 3.98 1.4550 1 0 6 12
64.00 12.73 1.4547 1 1 5 6
64.89 14.33 1.4369 2 1 2 12
68.67 1.48 1.3669 2 0 5 12
69.10 8.74 1.3593 2 1 3 12
70.77 9.03 1.3314 3 0 0 6
73.17 2.46 1.2934 1 1 6 6
74.02 3.64 1.2807 3 0 2 12
74.77 4.17 1.2697 1 0 7 12
74.81 8.99 1.2691 2 1 4 12
77.58 8.23 1.2305 2 0 6 12
81.94 2.12 1.1758 2 1 5 12
82.28 1.25 1.1717 0 0 8 2
83.51 2.57 1.1576 3 0 4 12
83.92 1.17 1.1530 2 2 0 3
86.57 1.31 1.1244 1 0 8 12
87.76 2.99 1.1122 2 0 7 12
88.98 1.51 1.1001 3 1 1 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.