Cerite-(CeCa) Moore P B, Shen J American Mineralogist 68 (1983) 996-1003 Cerite, RE9(Fe3+,Mg)(SiO4)6(SiO3OH)(OH)3: Its crystal structure and relation to whitlockite Note: Thermal parameters have been changed to match symmetry constraints, It is likely that the structure was refined wrong to begin with. _database_code_amcsd 0000921 CELL PARAMETERS: 10.7790 10.7790 38.0610 90.000 90.000 120.000 SPACE GROUP: R3c X-RAY WAVELENGTH: 1.541838 Cell Volume: 3829.727 Density (g/cm3): 4.830 MAX. ABS. INTENSITY / VOLUME**2: 40.89453346 RIR: 2.757 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.56 21.65 8.3809 0 1 2 3 13.29 12.28 6.6636 1 0 4 3 13.96 12.85 6.3435 0 0 6 1 16.45 17.48 5.3895 1 1 0 6 17.88 1.48 4.9605 1 1 3 6 19.58 27.70 4.5331 2 0 2 3 20.96 26.98 4.2388 0 1 8 3 21.20 3.48 4.1905 0 2 4 3 25.27 28.62 3.5244 1 0 10 3 25.68 63.17 3.4691 1 2 2 6 26.76 6.73 3.3318 2 0 8 3 26.95 37.97 3.3082 2 1 4 6 28.13 7.49 3.1718 0 0 12 1 28.69 36.43 3.1116 3 0 0 3 30.30 100.00 2.9497 0 2 10 3 31.57 36.72 2.8340 1 2 8 6 32.04 10.25 2.7936 0 3 6 3 32.04 22.90 2.7936 3 0 6 3 32.76 1.18 2.7335 1 1 12 6 33.25 42.58 2.6948 2 2 0 6 34.01 1.25 2.6359 2 2 3 6 34.67 26.36 2.5875 2 1 10 6 34.73 1.49 2.5831 1 3 1 6 34.98 7.10 2.5654 3 1 2 6 35.95 4.95 2.4982 1 3 4 6 38.31 4.25 2.3492 2 0 14 3 38.88 1.09 2.3164 0 4 2 3 39.08 8.37 2.3051 1 0 16 3 39.63 2.14 2.2741 3 1 8 6 39.77 3.31 2.2665 4 0 4 3 40.62 24.48 2.2212 3 0 12 3 40.62 3.08 2.2212 0 3 12 3 41.95 2.14 2.1535 1 2 14 6 42.22 7.83 2.1407 1 3 10 6 42.27 1.30 2.1382 3 2 1 6 42.48 9.99 2.1281 2 3 2 6 42.66 6.41 2.1194 0 2 16 3 42.76 2.86 2.1145 0 0 18 1 43.18 8.27 2.0952 0 4 8 3 43.31 8.18 2.0893 3 2 4 6 44.10 8.83 2.0536 2 2 12 6 44.48 1.07 2.0370 4 1 0 6 45.60 7.32 1.9895 4 0 10 3 46.02 4.28 1.9724 2 1 16 6 46.50 43.86 1.9528 2 3 8 6 46.84 5.25 1.9395 1 4 6 6 46.84 6.66 1.9395 4 1 6 6 48.79 11.05 1.8664 3 2 10 6 48.84 6.60 1.8647 0 1 20 3 49.03 17.41 1.8581 5 0 2 3 49.68 2.06 1.8352 4 1 9 6 49.77 9.22 1.8320 0 5 4 3 50.82 15.14 1.7965 3 3 0 6 51.89 23.33 1.7622 2 0 20 3 52.31 13.35 1.7489 3 0 18 3 52.31 13.83 1.7489 0 3 18 3 52.66 8.59 1.7380 5 0 8 3 52.97 1.99 1.7285 3 3 6 6 53.46 2.63 1.7140 4 1 12 6 53.90 1.33 1.7011 1 0 22 3 54.55 4.15 1.6823 2 3 14 6 54.76 7.67 1.6762 0 5 10 3 54.98 2.44 1.6701 1 5 2 6 55.56 5.17 1.6541 4 2 8 6 56.75 1.55 1.6222 0 2 22 3 57.94 13.42 1.5916 3 2 16 6 58.36 4.73 1.5813 1 5 8 6 59.10 6.35 1.5632 3 3 12 6 60.32 4.75 1.5343 5 1 10 6 60.53 1.44 1.5297 3 4 2 6 61.17 1.88 1.5151 4 3 4 6 61.35 1.79 1.5110 0 6 6 3 62.09 4.35 1.4948 5 2 0 6 63.03 2.43 1.4748 0 4 20 3 63.32 1.25 1.4687 0 5 16 3 63.40 1.53 1.4670 4 1 18 6 63.40 3.49 1.4670 1 4 18 6 63.72 2.46 1.4605 3 4 8 6 63.99 4.67 1.4549 5 2 6 6 63.99 1.71 1.4549 2 5 6 6 65.59 2.36 1.4233 4 3 10 6 65.63 7.63 1.4225 2 3 20 6 65.92 1.05 1.4170 2 4 16 6 66.13 2.21 1.4129 0 3 24 3 67.00 1.18 1.3968 0 6 12 3 67.00 1.73 1.3968 2 0 26 3 68.46 2.67 1.3704 5 1 16 6 68.54 2.13 1.3691 3 3 18 6 68.67 1.14 1.3668 2 2 24 6 69.52 2.69 1.3521 5 2 12 6 69.52 2.48 1.3521 1 2 26 6 69.90 1.91 1.3458 3 2 22 6 69.94 1.46 1.3451 1 0 28 3 70.83 4.78 1.3303 5 3 2 6 73.30 6.47 1.2915 2 6 2 6 73.79 2.02 1.2841 0 7 8 3 73.79 4.38 1.2841 5 3 8 6 73.88 2.59 1.2827 6 2 4 6 74.84 1.49 1.2687 0 0 30 1 74.86 3.17 1.2684 2 1 28 6 75.55 8.20 1.2585 3 5 10 6 75.59 3.83 1.2580 1 5 20 6 75.93 3.39 1.2532 6 0 18 3 76.22 1.14 1.2491 2 6 8 6 76.87 1.18 1.2401 4 4 12 6 77.14 4.84 1.2364 7 1 0 6 77.96 1.60 1.2256 6 2 10 6 78.34 2.32 1.2206 5 2 18 6 78.34 4.88 1.2206 2 5 18 6 79.27 1.83 1.2085 2 3 26 6 80.17 1.21 1.1973 5 3 14 6 82.02 2.56 1.1748 0 3 30 3 83.02 2.19 1.1632 3 5 16 6 83.02 1.91 1.1632 7 0 16 3 84.01 1.61 1.1520 1 7 12 6 84.01 1.10 1.1520 7 1 12 6 84.01 3.19 1.1520 5 0 26 3 84.38 1.70 1.1478 2 2 30 6 84.40 6.25 1.1477 3 2 28 6 85.73 3.03 1.1333 8 0 8 3 89.10 3.07 1.0989 0 5 28 3 89.80 4.87 1.0921 5 3 20 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.