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 = 673 K Melilite group _database_code_amcsd 0008531 CELL PARAMETERS: 7.8958 7.8958 5.0223 90.000 90.000 90.000 SPACE GROUP: P-42_1m X-RAY WAVELENGTH: 1.541838 Cell Volume: 313.109 Density (g/cm3): 3.042 MAX. ABS. INTENSITY / VOLUME**2: 20.96469591 RIR: 2.244 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 15.87 2.72 5.5832 1 1 0 4 17.66 6.19 5.0223 0 0 1 2 20.96 7.12 4.2377 1 0 1 8 23.83 18.30 3.7339 1 1 1 4 25.22 4.44 3.5311 2 1 0 8 28.76 36.47 3.1038 2 0 1 8 30.96 100.00 2.8886 2 1 1 8 32.06 6.61 2.7916 2 2 0 4 35.76 3.25 2.5111 0 0 2 2 35.97 23.28 2.4969 3 1 0 8 36.84 5.89 2.4400 2 2 1 4 37.59 6.29 2.3930 1 0 2 8 38.62 6.25 2.3312 3 0 1 8 39.34 2.55 2.2902 1 1 2 4 40.34 2.53 2.2358 3 1 1 8 44.26 11.24 2.0464 2 1 2 8 45.17 2.05 2.0074 3 2 1 8 45.98 3.56 1.9740 4 0 0 4 47.48 6.55 1.9150 4 1 0 8 48.78 5.97 1.8669 2 2 2 4 48.94 7.10 1.8611 3 3 0 4 51.04 8.30 1.7893 4 1 1 8 51.62 22.41 1.7706 3 1 2 8 51.78 7.50 1.7656 4 2 0 8 52.43 4.49 1.7451 3 3 1 4 55.14 1.95 1.6656 4 2 1 8 55.69 2.29 1.6505 3 2 2 8 57.47 2.07 1.6036 1 1 3 4 60.03 2.11 1.5413 2 0 3 8 61.28 4.08 1.5127 2 1 3 8 62.80 3.99 1.4798 5 1 1 8 64.52 1.59 1.4443 4 2 2 8 64.95 3.84 1.4357 2 2 3 4 66.15 1.96 1.4126 3 0 3 8 66.42 7.50 1.4075 5 2 1 8 67.05 2.95 1.3958 4 4 0 4 67.34 1.18 1.3905 3 1 3 8 69.40 1.03 1.3541 5 3 0 8 69.95 2.02 1.3448 4 4 1 4 70.44 1.12 1.3368 4 3 2 8 71.72 2.86 1.3160 6 0 0 4 75.42 3.52 1.2604 4 1 3 8 75.76 1.09 1.2556 0 0 4 2 76.54 2.06 1.2446 3 3 3 4 79.03 2.20 1.2116 6 2 1 8 80.14 1.71 1.1975 5 4 1 8 80.60 1.36 1.1919 5 3 2 8 82.81 2.04 1.1656 6 0 2 8 84.30 1.10 1.1487 4 3 3 8 85.40 2.16 1.1368 5 1 3 8 86.83 1.43 1.1217 3 1 4 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.