Osumilite Armbruster T, Oberhansli R American Mineralogist 73 (1988) 585-594 Crystal chemistry of double-ring silicates: Structural, chemical, and optical variation in osumilites Sample: Eifel-B93 _database_code_amcsd 0001151 CELL PARAMETERS: 10.0710 10.0710 14.3030 90.000 90.000 120.000 SPACE GROUP: P6/mcc X-RAY WAVELENGTH: 1.541838 Cell Volume: 1256.328 Density (g/cm3): 2.676 MAX. ABS. INTENSITY / VOLUME**2: 9.470745676 RIR: 1.152 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.14 22.97 8.7217 1 0 0 6 12.38 50.39 7.1515 0 0 2 2 16.03 42.68 5.5301 1 0 2 12 17.61 41.67 5.0355 1 1 0 6 20.36 22.75 4.3609 2 0 0 6 21.58 52.31 4.1173 1 1 2 12 23.90 27.81 3.7232 2 0 2 12 24.90 19.11 3.5758 0 0 4 2 26.95 25.51 3.3085 1 0 4 12 27.05 1.38 3.2965 2 1 0 12 27.77 100.00 3.2123 2 1 1 24 29.84 22.62 2.9938 2 1 2 24 30.67 59.08 2.9155 1 1 4 12 30.75 5.01 2.9072 3 0 0 6 32.38 39.21 2.7651 2 0 4 12 33.04 9.04 2.7115 2 1 3 24 33.27 1.15 2.6932 3 0 2 12 35.66 19.18 2.5178 2 2 0 6 37.09 3.42 2.4237 2 1 4 24 37.17 3.47 2.4190 3 1 0 12 37.72 3.84 2.3851 3 1 1 24 37.88 9.39 2.3749 2 2 2 12 41.88 8.62 2.1572 3 1 3 24 43.39 2.21 2.0856 4 0 2 12 43.98 2.47 2.0586 2 2 4 12 45.26 17.89 2.0036 3 1 4 24 45.32 7.14 2.0009 3 2 0 12 47.04 1.72 1.9317 2 1 6 24 47.79 5.52 1.9032 4 1 0 12 48.24 11.11 1.8866 4 1 1 24 49.34 18.45 1.8471 3 1 5 24 49.44 5.64 1.8434 3 0 6 12 49.56 5.01 1.8392 4 1 2 24 51.09 8.44 1.7879 0 0 8 2 52.46 6.28 1.7443 5 0 0 6 52.89 20.49 1.7310 2 2 6 12 54.01 1.96 1.6979 3 1 6 24 54.63 5.25 1.6801 4 1 4 24 54.68 2.65 1.6785 3 3 0 6 55.55 2.16 1.6542 2 0 8 12 55.77 2.59 1.6483 4 2 0 12 56.30 1.77 1.6341 3 3 2 12 58.22 3.03 1.5846 4 1 5 24 59.35 4.11 1.5572 5 1 1 24 60.40 2.81 1.5326 3 2 6 24 60.50 3.26 1.5302 5 1 2 24 60.82 3.68 1.5229 3 0 8 12 60.98 7.13 1.5194 3 3 4 12 62.40 1.93 1.4882 5 1 3 24 63.86 11.07 1.4577 2 2 8 12 65.00 2.78 1.4348 5 1 4 24 65.17 2.56 1.4315 2 1 9 24 65.34 2.63 1.4281 4 2 5 24 65.53 8.35 1.4245 6 0 2 12 67.01 9.71 1.3966 5 2 0 12 67.22 1.56 1.3927 4 1 7 24 67.37 4.85 1.3900 5 2 1 24 68.15 2.88 1.3759 1 1 10 12 68.26 2.31 1.3740 5 1 5 24 69.12 1.35 1.3591 2 0 10 12 69.31 1.11 1.3557 4 2 6 24 69.85 5.95 1.3466 6 0 4 12 70.23 2.11 1.3403 5 2 3 24 70.65 2.85 1.3332 3 2 8 24 70.96 7.97 1.3282 3 1 9 24 71.97 3.32 1.3121 2 1 10 24 72.68 3.26 1.3009 5 2 4 24 73.94 3.07 1.2818 4 3 5 24 76.45 1.25 1.2460 7 0 0 6 76.90 1.66 1.2398 4 4 2 12 78.39 2.65 1.2199 4 1 9 24 79.01 1.71 1.2118 4 2 8 24 79.19 3.34 1.2096 2 1 11 24 79.51 1.92 1.2055 5 3 3 24 79.55 3.87 1.2050 5 2 6 24 80.27 1.30 1.1960 4 0 10 12 80.55 1.04 1.1926 6 2 2 24 80.97 5.21 1.1874 4 4 4 12 84.89 1.37 1.1423 5 3 5 24 87.13 1.31 1.1186 4 3 8 24 87.42 1.20 1.1156 5 1 9 24 88.93 4.17 1.1006 5 2 8 24 89.06 1.31 1.0993 7 1 4 24 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.