Calcioburbankite Diffraction data computed using the structute from the paper listed below, along with the cell parameters refined from single crystal data of R070023 Belovitskaya Y V, Pekov I V, Gobechiya E R, Kabalov Y K, Subbotin V V Crystallography Reports 46 (2001) 927-931 Crystal structure of calcioburbankite and the characteristic features of the burbankite structure type Locality: Vuoriyarvi, North Kareliya CELL PARAMETERS: 10.4960 10.4960 6.4281 90.000 90.000 120.000 SPACE GROUP: P6_3mc ATOM X Y Z OCCUPANCY ISO(B) Na 0.52410 0.47590 0.31700 0.743 1.400 Ca 0.52410 0.47590 0.31700 0.163 1.400 Ce 0.52410 0.47590 0.31700 0.030 1.400 Ce 0.84060 0.15940 0.00000 0.116 1.010 La 0.84060 0.15940 0.00000 0.081 1.010 Nd 0.84060 0.15940 0.00000 0.033 1.010 Ba 0.84060 0.15940 0.00000 0.167 1.010 Ca 0.84060 0.15940 0.00000 0.316 1.010 Sr 0.84060 0.15940 0.00000 0.183 1.010 Na 0.84060 0.15940 0.00000 0.146 1.010 C 0.79700 0.20300 0.55000 1.000 5.000 C 0.00000 0.00000 0.88000 1.000 1.000 C 0.33333 0.66667 0.49000 1.000 2.000 O 0.37600 0.08800 0.63300 1.000 1.100 O 0.92600 0.07400 0.34400 1.000 1.800 O 0.40370 0.59630 0.47600 1.000 0.500 O 0.77600 0.22400 0.35900 1.000 1.800 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 0.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 8 +/- 8 +/- 5 MAX. ABS. INTENSITY / VOLUME**2: 26.88140966 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 9.73 13.72 9.0898 1 0 0 16.89 18.75 5.2483 1 0 1 16.89 20.64 5.2480 1 1 0 19.53 13.69 4.5449 2 0 0 23.98 36.61 3.7110 2 0 1 25.93 6.69 3.4356 2 1 0 27.76 21.11 3.2141 0 0 2 29.48 2.30 3.0302 1 0 2 29.48 42.10 3.0300 2 1 1 29.48 10.18 3.0299 3 0 0 32.67 7.68 2.7409 1 1 2 32.67 13.94 2.7407 3 0 1 34.17 49.04 2.6242 2 0 2 34.17 50.96 2.6240 2 2 0 35.61 1.42 2.5211 3 1 0 38.35 1.28 2.3471 2 1 2 38.35 11.38 2.3470 3 1 1 39.66 4.27 2.2725 4 0 0 40.93 6.76 2.2047 3 0 2 42.18 46.92 2.1425 4 0 1 43.39 13.44 2.0855 1 0 3 44.58 24.73 2.0326 2 2 2 45.74 6.79 1.9836 3 1 2 45.74 9.30 1.9836 3 2 1 45.74 5.83 1.9836 4 1 0 46.88 25.06 1.9381 2 0 3 48.00 1.47 1.8954 4 1 1 49.10 13.59 1.8555 4 0 2 50.18 2.72 1.8181 2 1 3 52.29 2.79 1.7494 3 0 3 52.29 7.17 1.7494 3 2 2 52.30 12.24 1.7493 5 0 1 54.35 3.19 1.6880 4 1 2 55.36 21.84 1.6596 4 2 1 56.35 2.69 1.6327 3 1 3 57.33 1.04 1.6070 0 0 4 58.31 2.37 1.5823 5 1 1 59.27 5.78 1.5590 4 0 3 60.23 1.73 1.5365 3 3 2 61.17 3.80 1.5151 2 0 4 61.18 5.79 1.5150 4 2 2 61.18 3.23 1.5150 6 0 0 62.11 1.98 1.4944 3 2 3 63.96 4.30 1.4555 4 3 1 63.96 1.19 1.4555 5 2 0 65.78 1.71 1.4197 3 0 4 65.78 1.93 1.4196 5 2 1 67.58 1.55 1.3862 6 1 0 68.46 7.60 1.3704 2 2 4 68.47 5.56 1.3704 6 0 2 69.35 1.74 1.3551 3 1 4 70.23 7.23 1.3403 4 2 3 71.97 2.20 1.3121 4 0 4 71.97 4.88 1.3120 4 4 0 74.55 2.25 1.2729 3 2 4 74.55 1.75 1.2728 6 1 2 74.55 1.20 1.2728 5 3 1 76.25 1.20 1.2487 4 1 4 77.10 3.77 1.2371 2 0 5 77.11 5.21 1.2370 6 2 1 77.95 1.59 1.2257 4 3 3 78.79 4.25 1.2147 4 4 2 79.62 1.64 1.2041 2 1 5 79.63 4.72 1.2040 5 2 3 79.63 1.94 1.2040 7 0 2 82.13 2.71 1.1736 4 2 4 82.13 2.26 1.1735 6 2 2 87.10 2.44 1.1190 4 0 5 87.10 3.44 1.1189 8 0 1 88.75 3.55 1.1024 6 0 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.