Ca2CoSi2O7 Kusaka K, Hagiya K, Ohmasa M, Okano Y, Mukai M, Iishi K, Haga N Physics and Chemistry of Minerals 28 (2001) 150-166 Determination of structures of Ca2CoSi2O7, Ca2MgSi2O7, and Ca2(Mg.55Fe.45)Si2O7 in incommensurate and normal phases and observation of diffuse streaks at high temperature Sample: T = 297 K Melilite group _database_code_amcsd 0008508 CELL PARAMETERS: 7.8444 7.8444 5.0265 90.000 90.000 90.000 SPACE GROUP: P-42_1m X-RAY WAVELENGTH: 1.541838 Cell Volume: 309.304 Density (g/cm3): 3.299 MAX. ABS. INTENSITY / VOLUME**2: 21.86149226 RIR: 2.158 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 17.64 15.03 5.0265 0 0 1 2 20.99 7.00 4.2322 1 0 1 8 23.89 36.49 3.7247 1 1 1 4 25.39 4.48 3.5081 2 1 0 8 28.87 58.75 3.0922 2 0 1 8 31.09 100.00 2.8768 2 1 1 8 32.28 12.60 2.7734 2 2 0 4 35.73 5.87 2.5133 0 0 2 2 36.21 37.35 2.4806 3 1 0 8 37.02 9.81 2.4283 2 2 1 4 37.58 6.19 2.3934 1 0 2 8 38.82 6.69 2.3197 3 0 1 8 39.36 4.43 2.2892 1 1 2 4 40.55 8.25 2.2245 3 1 1 8 44.34 11.77 2.0431 2 1 2 8 45.43 1.98 1.9966 3 2 1 8 46.30 1.71 1.9611 4 0 0 4 47.81 6.48 1.9025 4 1 0 8 48.91 10.79 1.8623 2 2 2 4 49.28 5.02 1.8489 3 3 0 4 49.92 2.74 1.8270 4 0 1 8 51.35 9.07 1.7794 4 1 1 8 51.78 33.64 1.7655 3 1 2 8 52.14 11.99 1.7541 4 2 0 8 52.75 7.85 1.7353 3 3 1 4 55.48 5.34 1.6561 4 2 1 8 55.90 2.35 1.6449 3 2 2 8 57.46 4.07 1.6039 1 1 3 4 60.04 4.30 1.5408 2 0 3 8 60.15 2.06 1.5384 5 1 0 8 61.31 4.66 1.5119 2 1 3 8 63.21 7.79 1.4711 5 1 1 8 64.82 4.10 1.4384 4 2 2 8 65.04 5.03 1.4341 2 2 3 4 66.25 2.36 1.4107 3 0 3 8 66.87 8.22 1.3991 5 2 1 8 67.45 2.97 1.3885 3 1 3 8 67.55 4.49 1.3867 4 4 0 4 69.93 2.29 1.3453 5 3 0 8 70.44 3.55 1.3368 4 4 1 4 70.80 1.26 1.3309 4 3 2 8 71.97 1.43 1.3121 5 1 2 8 72.27 4.41 1.3074 6 0 0 4 73.42 1.11 1.2896 6 1 0 8 74.48 1.04 1.2739 4 0 3 8 75.63 4.04 1.2574 4 1 3 8 75.68 1.82 1.2566 0 0 4 2 76.77 3.53 1.2416 3 3 3 4 78.83 1.82 1.2142 4 4 2 4 79.03 1.14 1.2116 4 2 3 8 79.61 4.20 1.2042 6 2 1 8 80.74 2.00 1.1902 5 4 1 8 81.08 2.99 1.1861 5 3 2 8 83.31 3.50 1.1599 6 0 2 8 84.62 1.36 1.1452 4 3 3 8 84.68 1.57 1.1446 2 2 4 4 85.74 3.89 1.1332 5 1 3 8 85.79 1.10 1.1326 3 0 4 8 86.90 3.13 1.1210 3 1 4 8 89.06 1.21 1.0993 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.