Barbertonite Mills S J, Whitfield P S, Wilson S A, Woodhouse J N, Dipple G M, Raudsepp M, Francis C A American Mineralogist 96 (2011) 179-187 The crystal structure of stichtite, re-examination of barbertonite, and the nature of polytypism in MgCr hydrotalcites Note: Sample 92459, 2H1 polytype of stichtite Locality: Barberton, South Africa _database_code_amcsd 0018334 CELL PARAMETERS: 3.0965 3.0965 15.6270 90.000 90.000 120.000 SPACE GROUP: P6_3/mmc X-RAY WAVELENGTH: 1.541838 Cell Volume: 129.759 Density (g/cm3): 2.092 MAX. ABS. INTENSITY / VOLUME**2: 30.43012295 RIR: 4.736 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.32 100.00 7.8135 0 0 2 2 22.76 36.45 3.9067 0 0 4 2 33.92 11.58 2.6430 1 0 1 12 35.39 10.19 2.5364 1 0 2 12 37.73 2.12 2.3842 1 0 3 12 40.81 5.75 2.2109 1 0 4 12 44.52 12.35 2.0352 1 0 5 12 48.74 12.70 1.8683 1 0 6 12 58.45 4.72 1.5789 1 0 8 12 59.73 6.39 1.5482 1 1 0 6 61.01 5.90 1.5187 1 1 2 12 64.77 3.49 1.4393 1 1 4 12 69.64 3.44 1.3502 1 0 10 12 71.38 1.08 1.3215 2 0 2 12 80.58 1.73 1.1921 2 0 6 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.