Graeserite Berlepsch P, Armbruster T Schweizerische Mineralogische und Petrographische Mitteilungen 78 (1998) 1-9 The crystal structure of Pb2+-bearing graeserite, Pb0.14(Fe,Ti)7AsO12+x(OH)2-x, a mineral of the derbylite group Locality: Gorb, Binn valley, Western Alps, Switzerland _database_code_amcsd 0015412 CELL PARAMETERS: 5.0053 14.2720 7.1736 90.000 105.165 90.000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 494.605 Density (g/cm3): 4.558 MAX. ABS. INTENSITY / VOLUME**2: 25.02492507 RIR: 1.788 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 12.40 4.36 7.1360 0 2 0 2 17.85 7.73 4.9692 0 2 1 4 19.40 2.58 4.5760 1 1 0 4 24.96 1.47 3.5680 0 4 0 2 25.73 2.11 3.4619 0 0 2 2 25.86 6.50 3.4450 1 1 1 4 26.29 1.23 3.3897 1 3 0 4 27.08 1.45 3.2924 -1 3 1 4 28.14 23.16 3.1716 0 4 1 4 28.66 52.05 3.1147 0 2 2 4 31.44 88.75 2.8452 1 3 1 4 33.43 100.00 2.6804 -1 3 2 4 36.03 23.95 2.4925 -2 0 1 2 36.21 6.48 2.4808 1 1 2 4 36.56 16.40 2.4575 1 5 0 4 37.16 7.75 2.4197 -1 5 1 4 37.82 10.62 2.3787 0 6 0 2 39.03 4.53 2.3079 0 0 3 2 39.12 2.83 2.3028 -1 1 3 4 39.51 3.52 2.2806 -2 0 2 2 40.08 3.15 2.2496 0 6 1 4 40.55 13.23 2.2245 1 5 1 4 41.11 1.33 2.1959 0 2 3 4 41.57 3.78 2.1724 -2 2 2 4 42.17 10.17 2.1430 -1 5 2 4 42.75 3.50 2.1151 2 0 1 2 43.18 1.03 2.0950 -1 3 3 4 44.69 18.21 2.0279 2 2 1 4 45.34 2.78 2.0002 2 4 0 4 46.79 2.94 1.9416 -2 0 3 2 47.30 2.22 1.9216 -2 4 2 4 48.18 2.70 1.8888 1 5 2 4 48.37 2.93 1.8817 1 1 3 4 48.46 1.48 1.8784 1 7 0 4 48.60 3.18 1.8734 -2 2 3 4 50.52 8.65 1.8066 -1 5 3 4 51.48 13.36 1.7750 2 0 2 2 51.62 1.93 1.7707 -1 1 4 4 51.70 2.12 1.7680 1 7 1 4 52.89 1.04 1.7309 0 0 4 2 53.01 3.54 1.7276 0 8 1 4 53.05 4.24 1.7263 -1 7 2 4 53.17 1.51 1.7225 2 2 2 4 53.23 9.84 1.7208 -2 6 1 4 55.47 5.87 1.6564 0 6 3 4 55.85 2.80 1.6462 -2 6 2 4 56.75 13.89 1.6222 -2 0 4 2 58.17 15.11 1.5858 0 8 2 4 58.38 24.44 1.5806 1 5 3 4 60.28 2.16 1.5353 -1 7 3 4 60.72 6.26 1.5253 3 3 0 4 61.26 15.28 1.5131 -1 5 4 4 61.55 1.20 1.5067 1 9 0 4 61.83 1.48 1.5006 1 1 4 4 62.51 3.24 1.4858 2 0 3 2 64.32 10.21 1.4482 -3 3 3 4 64.74 21.20 1.4399 -3 5 1 4 64.82 3.62 1.4384 1 3 4 4 65.39 9.22 1.4272 0 10 0 2 65.40 2.48 1.4270 -1 1 5 4 65.89 2.41 1.4176 3 3 1 4 66.55 4.66 1.4052 -2 8 2 4 68.31 3.58 1.3732 -1 3 5 4 68.85 9.52 1.3637 2 8 1 4 69.10 4.09 1.3594 0 2 5 4 70.12 1.04 1.3420 1 9 2 4 70.23 1.53 1.3402 -2 6 4 4 70.60 2.59 1.3340 1 5 4 4 71.87 2.83 1.3137 -2 8 3 4 75.94 2.64 1.2531 1 11 0 4 76.43 1.85 1.2462 -4 0 2 2 76.85 2.81 1.2404 2 2 4 4 76.99 1.99 1.2385 -2 10 1 4 79.34 2.13 1.2077 3 5 2 4 79.41 1.70 1.2067 1 3 5 4 80.69 2.60 1.1908 4 2 0 4 80.69 1.99 1.1908 -4 2 3 4 83.84 2.01 1.1540 0 0 6 2 84.06 1.38 1.1514 -2 2 6 4 86.86 1.22 1.1214 -3 5 5 4 87.75 1.74 1.1123 2 10 2 4 89.62 4.35 1.0939 0 8 5 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.