Akermanite Swainson I P, Dove M T, Schmahl W W, Putnis A Physics and Chemistry of Minerals 19 (1992) 185-195 Neutron powder diffraction study of the akermanite-gehlenite solid solution series Sample: 75% Ak _database_code_amcsd 0007697 CELL PARAMETERS: 7.7853 7.7853 5.0211 90.000 90.000 90.000 SPACE GROUP: P-42_1m X-RAY WAVELENGTH: 1.541838 Cell Volume: 304.333 Density (g/cm3): 2.968 MAX. ABS. INTENSITY / VOLUME**2: 21.69154180 RIR: 2.380 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 16.10 8.36 5.5050 1 1 0 4 17.66 1.99 5.0211 0 0 1 2 21.05 5.96 4.2196 1 0 1 8 22.85 2.46 3.8926 2 0 0 4 23.99 13.25 3.7098 1 1 1 4 25.58 3.52 3.4817 2 1 0 8 29.02 22.55 3.0764 2 0 1 8 31.26 100.00 2.8611 2 1 1 8 32.53 4.05 2.7525 2 2 0 4 35.77 1.92 2.5106 0 0 2 2 36.50 16.12 2.4619 3 1 0 8 37.25 6.27 2.4136 2 2 1 4 37.65 7.40 2.3894 1 0 2 8 39.07 7.57 2.3054 3 0 1 8 39.45 3.00 2.2842 1 1 2 4 40.82 1.65 2.2105 3 1 1 8 44.49 12.46 2.0364 2 1 2 8 45.74 2.38 1.9836 3 2 1 8 46.67 6.53 1.9463 4 0 0 4 48.19 5.62 1.8882 4 1 0 8 49.12 3.37 1.8549 2 2 2 4 49.68 9.69 1.8350 3 3 0 4 51.72 8.04 1.7674 4 1 1 8 52.03 20.13 1.7578 3 1 2 8 52.57 6.08 1.7408 4 2 0 8 53.14 3.03 1.7235 3 3 1 4 54.85 1.06 1.6737 0 0 3 2 56.19 2.30 1.6371 3 2 2 8 57.56 1.78 1.6013 1 1 3 4 60.18 1.20 1.5376 2 0 3 8 61.47 4.88 1.5085 2 1 3 8 62.71 1.29 1.4815 3 3 2 4 63.71 2.25 1.4608 5 1 1 8 65.22 1.05 1.4306 4 2 2 8 65.24 4.69 1.4301 2 2 3 4 66.47 2.28 1.4065 3 0 3 8 67.41 9.24 1.3893 5 2 1 8 68.13 3.09 1.3763 4 4 0 4 71.02 1.50 1.3273 4 4 1 4 71.27 1.40 1.3232 4 3 2 8 72.90 3.21 1.2975 6 0 0 4 75.78 1.08 1.2553 0 0 4 2 75.95 1.32 1.2528 5 2 2 8 75.98 4.10 1.2525 4 1 3 8 76.86 1.20 1.2402 6 1 1 8 77.13 1.76 1.2366 3 3 3 4 80.30 1.69 1.1956 6 2 1 8 81.44 2.20 1.1817 5 4 1 8 81.68 1.01 1.1788 5 3 2 8 83.95 1.77 1.1527 6 0 2 8 85.10 1.39 1.1400 4 3 3 8 86.03 1.34 1.1300 3 0 4 8 86.23 2.34 1.1280 5 1 3 8 87.16 1.28 1.1183 3 1 4 8 89.60 1.24 1.0941 5 2 3 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.