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: Norway _database_code_amcsd 0001150 CELL PARAMETERS: 10.1040 10.1040 14.3060 90.000 90.000 120.000 SPACE GROUP: P6/mcc X-RAY WAVELENGTH: 1.541838 Cell Volume: 1264.840 Density (g/cm3): 2.606 MAX. ABS. INTENSITY / VOLUME**2: 9.808654472 RIR: 1.226 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.11 4.34 8.7503 1 0 0 6 12.37 38.60 7.1530 0 0 2 2 16.00 14.41 5.5381 1 0 2 12 17.55 52.78 5.0520 1 1 0 6 20.30 10.21 4.3752 2 0 0 6 21.53 38.32 4.1266 1 1 2 12 23.84 42.41 3.7323 2 0 2 12 24.90 21.71 3.5765 0 0 4 2 26.93 12.38 3.3106 1 0 4 12 26.96 6.52 3.3073 2 1 0 12 27.68 100.00 3.2223 2 1 1 24 29.76 9.65 3.0020 2 1 2 24 30.63 50.15 2.9191 1 1 4 12 30.65 4.05 2.9168 3 0 0 6 32.33 48.66 2.7690 2 0 4 12 32.96 9.03 2.7177 2 1 3 24 35.54 15.10 2.5260 2 2 0 6 37.04 6.59 2.4269 3 1 0 12 37.59 3.40 2.3927 3 1 1 24 37.77 7.36 2.3818 2 2 2 12 41.76 8.79 2.1629 3 1 3 24 43.25 4.05 2.0919 4 0 2 12 43.88 1.49 2.0633 2 2 4 12 45.15 11.15 2.0082 3 1 4 24 45.17 4.35 2.0075 3 2 0 12 47.62 4.25 1.9095 4 1 0 12 48.07 10.86 1.8927 4 1 1 24 48.80 1.96 1.8662 4 0 4 12 49.23 18.26 1.8508 3 1 5 24 49.37 4.50 1.8460 3 0 6 12 49.40 3.25 1.8449 4 1 2 24 51.08 7.61 1.7882 0 0 8 2 52.27 5.72 1.7501 5 0 0 6 52.80 16.77 1.7339 2 2 6 12 54.43 1.55 1.6858 1 1 8 12 54.47 3.66 1.6844 4 1 4 24 54.49 3.22 1.6840 3 3 0 6 55.51 1.14 1.6553 2 0 8 12 55.57 4.66 1.6537 4 2 0 12 56.11 1.13 1.6392 3 3 2 12 58.08 3.58 1.5883 4 1 5 24 59.14 3.07 1.5622 5 1 1 24 60.27 1.66 1.5357 3 2 6 24 60.30 1.81 1.5350 5 1 2 24 60.75 2.98 1.5245 3 0 8 12 60.80 5.76 1.5236 3 3 4 12 62.19 1.70 1.4926 5 1 3 24 63.77 9.69 1.4595 2 2 8 12 64.80 1.93 1.4388 5 1 4 24 65.11 2.75 1.4327 2 1 9 24 65.16 2.93 1.4317 4 2 5 24 65.30 7.41 1.4290 6 0 2 12 66.76 8.74 1.4012 5 2 0 12 67.08 1.50 1.3952 4 1 7 24 67.12 5.33 1.3945 5 2 1 24 68.06 1.65 1.3775 5 1 5 24 68.12 2.25 1.3765 1 1 10 12 69.08 1.97 1.3598 2 0 10 12 69.13 2.65 1.3588 4 2 6 24 69.62 5.77 1.3504 6 0 4 12 69.98 2.39 1.3443 5 2 3 24 70.53 1.87 1.3353 3 2 8 24 70.87 8.24 1.3297 3 1 9 24 71.91 2.32 1.3130 2 1 10 24 72.44 4.79 1.3046 5 2 4 24 73.71 2.84 1.2852 4 3 5 24 76.61 1.38 1.2438 4 4 2 12 78.25 2.95 1.2217 4 1 9 24 78.84 3.30 1.2141 4 2 8 24 79.13 3.58 1.2103 2 1 11 24 79.22 1.43 1.2092 5 3 3 24 79.31 3.12 1.2080 5 2 6 24 80.16 1.93 1.1973 4 0 10 12 80.24 2.01 1.1964 6 2 2 24 80.68 5.29 1.1909 4 4 4 12 81.58 1.27 1.1800 7 0 4 12 84.60 1.02 1.1455 5 3 5 24 86.91 1.10 1.1209 4 3 8 24 88.69 3.71 1.1029 5 2 8 24 89.63 2.53 1.0938 8 0 0 6 90.00 1.21 1.0903 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.