Combeite Fischer R X, Tillmanns E Neues Jahrbuch fur Mineralogie, Monatshefte 1983 (1983) 49-59 Die Kristallstrukturen von naturlichem Na2Ca2Si3O9 vom Mt.Shaheru (Zaire) und aus dem Mayener Feld (Eifel) Note: this is the high-temperature form of combeite Locality: Mt. Shaheru, Zaire _database_code_amcsd 0019535 CELL PARAMETERS: 10.4290 10.4290 13.1490 90.000 90.000 120.000 SPACE GROUP: R-3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 1238.536 Density (g/cm3): 2.850 MAX. ABS. INTENSITY / VOLUME**2: 10.32055796 RIR: 1.179 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.89 11.25 7.4447 1 0 1 6 16.68 10.78 5.3154 0 1 2 6 17.00 26.85 5.2145 1 1 0 6 20.26 17.50 4.3830 0 0 3 2 20.80 2.20 4.2710 0 2 1 6 23.91 6.59 3.7224 2 0 2 6 26.57 31.03 3.3552 1 1 3 12 26.98 60.67 3.3042 2 1 1 12 28.90 8.12 3.0890 1 0 4 6 29.48 6.80 3.0296 1 2 2 12 29.67 16.07 3.0106 3 0 0 6 33.72 93.75 2.6577 0 2 4 6 34.40 100.00 2.6072 2 2 0 6 35.55 3.55 2.5249 0 1 5 6 38.46 4.77 2.3408 3 1 2 12 39.66 5.14 2.2725 2 0 5 6 40.54 5.27 2.2254 4 0 1 6 41.19 6.26 2.1915 0 0 6 2 42.32 24.96 2.1355 0 4 2 6 43.44 4.91 2.0833 1 2 5 12 44.86 1.26 2.0203 1 1 6 12 48.94 62.06 1.8612 4 0 4 6 49.57 2.80 1.8391 1 0 7 6 50.30 1.30 1.8138 3 1 5 12 50.79 9.12 1.7975 1 4 3 12 51.04 6.61 1.7895 0 5 1 6 52.18 1.36 1.7529 3 2 4 12 52.66 2.01 1.7382 3 3 0 6 52.78 5.57 1.7344 0 2 7 6 54.71 1.88 1.6776 2 2 6 12 55.87 7.20 1.6457 2 1 7 12 56.55 1.50 1.6275 2 3 5 12 57.00 4.81 1.6158 3 3 3 12 57.22 2.21 1.6100 5 1 1 12 58.61 2.01 1.5749 1 5 2 12 59.89 12.20 1.5445 2 0 8 6 61.18 20.36 1.5148 2 4 4 12 61.61 8.27 1.5053 6 0 0 6 63.00 5.43 1.4754 4 3 1 12 63.48 1.52 1.4654 4 1 6 12 63.70 1.53 1.4610 0 0 9 2 67.28 5.81 1.3917 3 2 7 12 68.29 6.03 1.3734 5 2 3 12 69.46 1.72 1.3532 4 3 4 12 70.92 8.05 1.3288 0 4 8 6 71.82 1.03 1.3144 3 0 9 6 72.51 10.72 1.3036 4 4 0 6 73.20 2.01 1.2930 3 4 5 12 73.55 2.32 1.2877 2 3 8 12 74.44 2.20 1.2745 2 2 9 12 76.19 1.47 1.2495 4 4 3 12 78.37 1.91 1.2201 6 1 5 12 81.26 6.46 1.1839 4 2 8 12 82.40 8.56 1.1704 6 2 4 12 83.69 1.17 1.1556 2 0 11 6 86.21 2.37 1.1282 1 2 11 12 87.15 1.35 1.1184 3 3 9 12 87.90 2.27 1.1107 1 6 7 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.