Pb2OFCl Aurivillius B Chemica Scripta 11 (1977) 208-211 A case of mimetic twinning. The crystal structures of Pb2OFX (X=Cl, Br, and I) Locality: synthetic Sample: Pb2OFCl(L), isostructural with blixite _database_code_amcsd 0012187 CELL PARAMETERS: 5.7221 5.7269 12.5410 90.000 90.000 90.000 SPACE GROUP: Acmm X-RAY WAVELENGTH: 1.541838 Cell Volume: 410.967 Density (g/cm3): 7.835 MAX. ABS. INTENSITY / VOLUME**2: 11.56329037 RIR: 0.481 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 14.12 100.00 6.2705 0 0 2 2 15.49 36.90 5.7221 1 0 0 2 28.47 15.45 3.1353 0 0 4 2 30.75 52.44 2.9080 1 1 3 8 31.24 1.01 2.8635 0 2 0 2 34.43 34.03 2.6047 0 2 2 4 34.46 32.14 2.6029 2 0 2 4 35.81 1.34 2.5077 2 1 1 8 41.36 1.14 2.1828 2 1 3 8 42.39 8.15 2.1321 1 1 5 8 44.78 13.49 2.0239 2 2 0 4 50.95 4.02 1.7923 1 3 1 8 50.99 3.13 1.7911 3 1 1 8 53.92 12.54 1.7004 2 2 4 8 54.34 6.46 1.6882 0 2 6 4 54.36 6.08 1.6878 2 0 6 4 55.28 2.95 1.6616 1 3 3 8 55.32 2.29 1.6607 3 1 3 8 56.14 2.77 1.6383 1 1 7 8 58.91 2.30 1.5676 0 0 8 2 63.35 1.72 1.4682 1 3 5 8 63.38 1.34 1.4675 3 1 5 8 65.16 1.50 1.4317 0 4 0 2 65.22 1.17 1.4305 4 0 0 2 71.62 1.08 1.3176 1 1 9 8 72.59 1.91 1.3024 0 4 4 4 72.65 1.48 1.3015 4 0 4 4 75.84 3.00 1.2545 2 4 2 8 75.88 2.47 1.2539 4 2 2 8 76.93 2.84 1.2393 2 2 8 8 84.30 1.07 1.1488 0 2 10 4 84.32 1.00 1.1486 2 0 10 4 89.84 1.63 1.0918 2 4 6 8 89.88 1.33 1.0914 4 2 6 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.