Stichtite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R060303 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: 3R1 polytype of stichtite Locality: Tasmania, Australia _database_code_amcsd 0018330 CELL PARAMETERS: 3.1240 3.1240 23.5400 90.000 90.000 120.000 SPACE GROUP: R-3m ATOM X Y Z OCCUPANCY ISO(B) Mg 0.00000 0.00000 0.00000 0.770 0.160 Cr 0.00000 0.00000 0.00000 0.230 0.160 O 0.33333 0.66667 0.37268 1.000 0.040 H 0.33333 0.66667 0.41108 1.000 0.040 Wa 0.12420 -0.12420 0.50000 0.102 0.020 C 0.33333 0.66667 0.50000 0.059 0.020 O 0.33333 0.66667 0.50000 0.177 0.020 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 2 +/- 2 +/- 21 MAX. ABS. INTENSITY / VOLUME**2: 24.13906280 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 11.28 100.00 7.8467 0 0 3 22.66 39.26 3.9233 0 0 6 33.34 5.63 2.6878 1 0 1 36.55 31.45 2.4581 1 0 4 42.90 24.33 2.1080 1 0 7 45.55 2.10 1.9916 0 1 8 46.28 1.06 1.9617 0 0 12 51.46 14.69 1.7759 1 0 10 54.69 3.41 1.6784 0 1 11 59.15 10.85 1.5620 1 1 0 60.43 10.87 1.5319 1 1 3 61.63 3.51 1.5048 1 0 13 64.18 5.21 1.4512 1 1 6 65.34 5.20 1.4281 0 1 14 69.62 1.43 1.3505 0 2 1 71.57 1.90 1.3184 0 2 4 75.80 4.32 1.2550 0 2 7 77.43 2.96 1.2326 0 1 17 82.19 1.94 1.1729 0 2 10 84.79 1.33 1.1434 2 0 11 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.