Beryl Artioli G, Rinaldi R, Stahl K, Zanazzi P F American Mineralogist 78 (1993) 762-768 Structure refinements of beryl by single-crystal neutron and X-ray diffraction Sample no. 2, aquamarine, probed with X-rays, T = 295 K _database_code_amcsd 0001606 CELL PARAMETERS: 9.2180 9.2180 9.1970 90.000 90.000 120.000 SPACE GROUP: P6/mcc X-RAY WAVELENGTH: 1.541838 Cell Volume: 676.784 Density (g/cm3): 2.689 MAX. ABS. INTENSITY / VOLUME**2: 14.65649135 RIR: 1.775 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.08 100.00 7.9830 1 0 0 6 19.26 2.34 4.6090 1 1 0 6 19.30 26.37 4.5985 0 0 2 2 22.27 5.01 3.9915 2 0 0 6 22.31 16.57 3.9847 1 0 2 12 27.40 80.26 3.2553 1 1 2 12 29.61 4.75 3.0173 2 1 0 12 29.64 18.91 3.0143 2 0 2 12 31.20 73.07 2.8670 2 1 1 24 33.68 1.34 2.6610 3 0 0 6 35.59 14.82 2.5227 2 1 2 24 39.18 6.02 2.2992 0 0 4 2 40.75 2.16 2.2141 3 1 0 12 40.84 1.55 2.2094 1 0 4 12 41.97 5.74 2.1526 3 1 1 24 42.02 1.00 2.1504 2 1 3 24 44.01 1.89 2.0574 1 1 4 12 45.45 2.76 1.9958 4 0 0 6 45.47 1.60 1.9949 3 1 2 24 45.53 7.49 1.9923 2 0 4 12 49.79 2.90 1.8314 3 2 0 12 50.87 8.26 1.7949 3 1 3 24 52.53 7.08 1.7420 4 1 0 12 52.61 10.04 1.7398 3 0 4 12 53.54 6.56 1.7116 4 1 1 24 53.88 1.07 1.7015 3 2 2 24 56.49 1.82 1.6291 4 1 2 24 56.54 10.40 1.6277 2 2 4 12 57.74 3.93 1.5966 5 0 0 6 57.81 1.93 1.5949 3 1 4 24 58.72 4.58 1.5722 3 2 3 24 58.79 2.22 1.5706 2 1 5 24 60.39 3.91 1.5328 0 0 6 2 61.19 11.94 1.5146 4 1 3 24 61.46 1.04 1.5086 4 2 0 12 63.88 3.98 1.4572 3 3 2 12 64.01 4.21 1.4545 1 1 6 12 65.07 4.82 1.4335 4 2 2 24 65.12 4.81 1.4325 3 2 4 24 68.56 3.03 1.3688 5 1 2 24 68.68 3.31 1.3666 2 1 6 24 74.18 3.09 1.2783 5 2 0 12 74.20 7.31 1.2781 6 0 2 12 74.32 1.51 1.2763 2 2 6 12 75.02 6.16 1.2661 5 2 1 24 75.11 3.89 1.2648 4 1 5 24 75.35 2.95 1.2614 4 2 4 24 75.43 1.44 1.2603 3 1 6 24 78.58 1.30 1.2174 6 1 0 12 79.43 5.86 1.2065 4 3 3 24 79.58 5.50 1.2046 2 1 7 24 81.60 1.09 1.1798 5 2 3 24 84.05 1.86 1.1516 6 0 4 12 84.22 2.68 1.1496 0 0 8 2 85.12 2.28 1.1398 4 3 4 24 87.26 2.75 1.1172 5 2 4 24 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.