Rhomboclase Peterson R C, Valyashko E, Wang R The Canadian Mineralogist 47 (2009) 625-634 The atomic structure of (H3O)Fe3+(SO4)2 and rhomboclase, (H5O2)Fe3+(SO4)2*2H2O Note: T = 180 K Locality: Alcoparrosa, Chile _database_code_amcsd 0006292 CELL PARAMETERS: 9.6870 18.2040 5.4250 90.000 90.000 90.000 SPACE GROUP: Pnma X-RAY WAVELENGTH: 1.541838 Cell Volume: 956.656 Density (g/cm3): 2.229 MAX. ABS. INTENSITY / VOLUME**2: 24.25002408 RIR: 3.543 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.72 100.00 9.1020 0 2 0 2 17.05 2.40 5.1990 0 1 1 4 18.32 3.58 4.8435 2 0 0 2 18.75 23.25 4.7333 1 0 1 4 19.38 1.05 4.5810 1 1 1 8 20.77 4.31 4.2758 2 2 0 4 21.16 8.68 4.1994 1 2 1 8 21.98 19.93 4.0443 0 3 1 4 23.84 2.72 3.7321 1 3 1 8 25.13 11.96 3.5439 2 1 1 8 26.88 18.67 3.3166 2 4 0 4 27.18 25.83 3.2806 1 4 1 8 28.76 23.05 3.1044 2 3 1 8 29.44 2.08 3.0340 0 6 0 2 29.55 1.56 3.0231 0 5 1 4 32.26 2.74 2.7747 3 0 1 4 33.77 6.01 2.6541 3 2 1 8 34.50 1.36 2.5995 0 2 2 4 34.89 1.53 2.5712 2 6 0 4 35.13 1.78 2.5543 1 6 1 8 35.76 2.31 2.5107 1 2 2 8 37.12 4.74 2.4218 4 0 0 2 38.47 4.68 2.3403 4 2 0 4 38.64 2.68 2.3300 0 4 2 4 38.76 2.54 2.3234 2 6 1 8 39.34 4.81 2.2905 2 2 2 8 39.61 2.45 2.2755 0 8 0 2 40.93 1.00 2.2049 2 3 2 8 42.27 1.95 2.1379 4 4 0 4 42.85 2.90 2.1107 2 7 1 8 43.08 5.85 2.0997 2 4 2 8 44.16 2.90 2.0508 1 8 1 8 44.24 2.43 2.0476 3 6 1 8 44.82 6.51 2.0222 0 6 2 4 51.05 2.73 1.7890 5 2 1 8 51.58 1.06 1.7720 4 2 2 8 51.80 1.19 1.7649 2 9 1 8 51.97 1.37 1.7595 3 8 1 8 52.49 4.04 1.7433 0 8 2 4 54.16 2.77 1.6935 5 4 1 8 54.66 1.18 1.6791 4 4 2 8 55.50 1.02 1.6558 1 4 3 8 59.08 1.21 1.5636 5 6 1 8 59.46 1.32 1.5546 3 2 3 8 59.56 4.49 1.5522 4 6 2 8 60.88 1.39 1.5216 6 4 0 4 61.88 1.49 1.4994 6 3 1 8 62.28 1.09 1.4907 3 4 3 8 63.98 1.67 1.4551 4 10 0 4 64.50 1.04 1.4446 1 12 1 8 64.59 1.70 1.4429 2 10 2 8 65.49 1.01 1.4253 6 6 0 4 66.83 1.56 1.3998 3 6 3 8 74.26 1.34 1.2772 2 12 2 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.