Ca2(Mg.55Fe.45)Si2O7 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 0008524 CELL PARAMETERS: 7.8679 7.8679 5.0144 90.000 90.000 90.000 SPACE GROUP: P-42_1m X-RAY WAVELENGTH: 1.541838 Cell Volume: 310.411 Density (g/cm3): 3.068 MAX. ABS. INTENSITY / VOLUME**2: 21.54200295 RIR: 2.286 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 15.93 2.56 5.5634 1 1 0 4 17.69 6.13 5.0144 0 0 1 2 21.01 6.90 4.2286 1 0 1 8 23.89 17.94 3.7247 1 1 1 4 25.31 4.42 3.5186 2 1 0 8 28.85 37.66 3.0951 2 0 1 8 31.05 100.00 2.8803 2 1 1 8 32.18 6.72 2.7817 2 2 0 4 35.82 3.54 2.5072 0 0 2 2 36.10 24.50 2.4880 3 1 0 8 36.95 5.77 2.4325 2 2 1 4 37.65 6.42 2.3888 1 0 2 8 38.75 6.47 2.3240 3 0 1 8 39.42 2.58 2.2858 1 1 2 4 40.47 2.69 2.2288 3 1 1 8 44.36 11.39 2.0419 2 1 2 8 45.32 1.94 2.0009 3 2 1 8 46.15 3.42 1.9670 4 0 0 4 47.66 6.71 1.9082 4 1 0 8 48.91 6.60 1.8624 2 2 2 4 49.13 7.36 1.8545 3 3 0 4 51.22 8.81 1.7835 4 1 1 8 51.76 23.42 1.7660 3 1 2 8 51.98 7.75 1.7593 4 2 0 8 52.62 4.85 1.7393 3 3 1 4 55.34 2.20 1.6601 4 2 1 8 55.85 2.32 1.6460 3 2 2 8 57.58 2.33 1.6008 1 1 3 4 60.15 2.43 1.5384 2 0 3 8 61.02 1.06 1.5185 4 1 2 8 61.41 4.56 1.5098 2 1 3 8 63.03 4.65 1.4748 5 1 1 8 64.73 1.97 1.4401 4 2 2 8 65.11 4.15 1.4327 2 2 3 4 66.31 2.11 1.4095 3 0 3 8 66.68 7.97 1.4027 5 2 1 8 67.32 3.30 1.3909 4 4 0 4 67.51 1.41 1.3874 3 1 3 8 69.69 1.21 1.3493 5 3 0 8 70.23 2.33 1.3403 4 4 1 4 70.68 1.24 1.3328 4 3 2 8 72.02 3.25 1.3113 6 0 0 4 73.17 1.11 1.2935 6 1 0 8 75.63 3.91 1.2573 4 1 3 8 75.90 1.27 1.2536 0 0 4 2 76.77 2.38 1.2416 3 3 3 4 78.67 1.07 1.2162 4 4 2 4 79.36 2.63 1.2074 6 2 1 8 80.48 1.89 1.1934 5 4 1 8 80.91 1.77 1.1882 5 3 2 8 83.13 2.43 1.1620 6 0 2 8 84.58 1.25 1.1457 4 3 3 8 84.83 1.08 1.1429 2 2 4 4 85.68 2.66 1.1338 5 1 3 8 85.94 1.02 1.1310 3 0 4 8 87.04 1.88 1.1195 3 1 4 8 88.99 1.16 1.1000 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.