Ba3Ta6Si4O26 Choisnet J, Nguyen N, Groult D, Raveau B Materials Research Bulletin 11 (1976) 887-894 De nouveaux oxydes a reseau forme d'octahedres NbO6 (TaO6) et de groupes Si2O7: Les phases A3Ta6Si4O26 (A = Ba,Sr) et K6M6Si4O26 (M = Nb,Ta) _database_code_amcsd 0014243 CELL PARAMETERS: 9.0010 9.0010 7.7340 90.000 90.000 120.000 SPACE GROUP: P-62m X-RAY WAVELENGTH: 1.541838 Cell Volume: 542.646 Density (g/cm3): 6.199 MAX. ABS. INTENSITY / VOLUME**2: 127.5865098 RIR: 6.702 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.35 29.95 7.7951 1 0 0 6 11.44 13.89 7.7340 0 0 1 2 16.14 2.28 5.4902 1 0 1 12 19.73 52.05 4.5005 1 1 0 3 22.82 6.93 3.8975 2 0 0 6 22.86 28.33 3.8898 1 1 1 6 23.00 30.59 3.8670 0 0 2 2 25.59 11.75 3.4806 2 0 1 12 25.72 25.46 3.4642 1 0 2 12 30.34 100.00 2.9463 2 1 0 6 30.48 77.42 2.9330 1 1 2 6 32.52 3.20 2.7533 2 1 1 12 32.62 31.05 2.7451 2 0 2 12 34.52 9.90 2.5984 3 0 0 6 34.80 3.63 2.5780 0 0 3 2 38.41 34.63 2.3436 2 1 2 12 40.07 6.82 2.2503 2 2 0 3 40.32 2.53 2.2370 1 1 3 6 41.78 3.75 2.1620 3 1 0 6 41.81 2.24 2.1607 2 2 1 6 43.46 6.64 2.0821 3 1 1 12 46.61 16.26 1.9488 4 0 0 6 46.70 4.45 1.9449 2 2 2 6 46.83 9.09 1.9401 2 1 3 12 47.00 15.26 1.9335 0 0 4 2 48.22 13.28 1.8871 3 1 2 12 48.51 2.33 1.8766 1 0 4 12 49.83 1.53 1.8301 3 0 3 12 51.07 13.14 1.7883 3 2 0 6 51.44 8.34 1.7765 1 1 4 6 52.52 2.46 1.7423 3 2 1 12 52.59 24.45 1.7403 4 0 2 12 53.90 6.67 1.7010 4 1 0 6 55.47 1.90 1.6566 3 1 3 12 56.71 24.83 1.6232 3 2 2 12 56.97 29.19 1.6165 2 1 4 12 59.27 5.09 1.5590 5 0 0 6 59.35 11.42 1.5570 4 1 2 12 59.60 2.82 1.5512 3 0 4 12 60.59 1.58 1.5283 5 0 1 12 61.85 6.85 1.5002 3 3 0 3 63.11 3.61 1.4731 4 2 0 6 63.43 2.70 1.4665 2 2 4 6 63.61 2.25 1.4628 1 1 5 6 64.38 1.02 1.4471 4 2 1 12 64.68 1.43 1.4412 3 1 4 12 64.85 1.39 1.4377 2 0 5 12 66.82 4.79 1.4000 5 1 0 6 66.90 4.75 1.3986 3 3 2 6 68.11 3.20 1.3766 4 2 2 12 68.34 9.06 1.3726 4 0 4 12 70.60 1.72 1.3341 5 0 3 12 71.69 6.56 1.3164 5 1 2 12 71.92 7.54 1.3129 3 2 4 12 74.13 1.14 1.2790 4 2 3 12 74.26 3.37 1.2771 4 1 4 12 74.63 1.30 1.2717 1 0 6 12 75.59 1.26 1.2580 3 1 5 12 76.28 2.90 1.2482 5 2 0 6 76.94 3.94 1.2392 1 1 6 6 78.09 1.40 1.2238 2 0 6 12 78.87 3.90 1.2136 5 0 4 12 80.86 4.26 1.1887 6 1 0 6 80.93 7.79 1.1879 5 2 2 12 81.15 5.54 1.1852 3 3 4 6 81.51 3.46 1.1809 2 1 6 12 82.28 2.55 1.1718 4 2 4 12 82.44 1.68 1.1699 3 2 5 12 85.45 9.52 1.1363 6 1 2 12 85.66 3.92 1.1340 5 1 4 12 88.26 1.98 1.1072 3 1 6 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.