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: Oregon _database_code_amcsd 0001156 CELL PARAMETERS: 10.1370 10.1370 14.3080 90.000 90.000 120.000 SPACE GROUP: P6/mcc X-RAY WAVELENGTH: 1.541838 Cell Volume: 1273.293 Density (g/cm3): 2.631 MAX. ABS. INTENSITY / VOLUME**2: 9.681485704 RIR: 1.198 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.08 8.07 8.7789 1 0 0 6 12.37 44.91 7.1540 0 0 2 2 15.98 29.25 5.5458 1 0 2 12 17.50 45.63 5.0685 1 1 0 6 20.23 16.76 4.3894 2 0 0 6 21.49 49.32 4.1357 1 1 2 12 23.78 32.28 3.7413 2 0 2 12 24.89 19.48 3.5770 0 0 4 2 26.87 1.77 3.3181 2 1 0 12 26.92 21.11 3.3126 1 0 4 12 27.60 100.00 3.2323 2 1 1 24 29.68 14.41 3.0101 2 1 2 24 30.55 5.72 2.9263 3 0 0 6 30.59 56.47 2.9225 1 1 4 12 32.28 41.52 2.7729 2 0 4 12 32.88 9.77 2.7238 2 1 3 24 35.42 16.88 2.5343 2 2 0 6 36.92 4.88 2.4348 3 1 0 12 36.95 1.15 2.4326 2 1 4 24 37.47 4.63 2.4003 3 1 1 24 37.66 8.47 2.3888 2 2 2 12 41.65 7.95 2.1686 3 1 3 24 43.11 2.32 2.0982 4 0 2 12 43.78 1.85 2.0679 2 2 4 12 45.01 4.70 2.0140 3 2 0 12 45.04 14.89 2.0128 3 1 4 24 46.92 1.07 1.9364 2 1 6 24 47.46 5.95 1.9157 4 1 0 12 47.91 10.02 1.8988 4 1 1 24 49.13 18.28 1.8544 3 1 5 24 49.24 5.47 1.8505 4 1 2 24 49.29 5.66 1.8486 3 0 6 12 51.07 7.89 1.7885 0 0 8 2 52.09 6.59 1.7558 5 0 0 6 52.71 17.80 1.7367 2 2 6 12 54.30 2.81 1.6895 3 3 0 6 54.32 4.90 1.6888 4 1 4 24 55.38 2.64 1.6591 4 2 0 12 55.48 2.19 1.6563 2 0 8 12 55.78 1.06 1.6480 4 2 1 24 55.92 1.72 1.6443 3 3 2 12 57.93 2.94 1.5919 4 1 5 24 58.93 3.48 1.5672 5 1 1 24 60.09 2.50 1.5398 5 1 2 24 60.14 2.12 1.5387 3 2 6 24 60.61 6.86 1.5277 3 3 4 12 60.69 3.72 1.5260 3 0 8 12 61.99 2.02 1.4970 5 1 3 24 63.68 9.68 1.4613 2 2 8 12 64.60 1.87 1.4428 5 1 4 24 64.98 3.60 1.4353 4 2 5 24 65.06 2.43 1.4337 2 1 9 24 65.07 7.42 1.4335 6 0 2 12 66.52 9.85 1.4057 5 2 0 12 66.88 4.56 1.3990 5 2 1 24 66.94 1.62 1.3978 4 1 7 24 67.87 2.08 1.3810 5 1 5 24 68.09 3.01 1.3770 1 1 10 12 68.95 1.08 1.3619 4 2 6 24 69.04 1.28 1.3604 2 0 10 12 69.40 5.45 1.3542 6 0 4 12 69.74 1.81 1.3484 5 2 3 24 70.41 1.98 1.3373 3 2 8 24 70.78 8.15 1.3312 3 1 9 24 71.86 2.41 1.3139 2 1 10 24 72.21 3.64 1.3083 5 2 4 24 73.49 2.45 1.2886 4 3 5 24 75.86 1.31 1.2541 7 0 0 6 76.32 1.27 1.2477 4 4 2 12 78.12 2.50 1.2234 4 1 9 24 78.66 1.70 1.2163 4 2 8 24 78.92 1.10 1.2130 6 2 1 24 78.93 1.77 1.2129 5 3 3 24 79.08 3.43 1.2110 2 1 11 24 79.08 4.44 1.2110 5 2 6 24 80.06 1.11 1.1986 4 0 10 12 80.40 5.10 1.1944 4 4 4 12 81.29 1.31 1.1835 7 0 4 12 84.31 1.46 1.1487 5 3 5 24 86.69 1.31 1.1232 4 3 8 24 88.40 1.41 1.1058 7 1 4 24 88.46 4.65 1.1052 5 2 8 24 89.26 1.55 1.0974 8 0 0 6 89.83 1.64 1.0919 3 3 10 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.