Melanotekite Dorsam G, Liebscher A, Wunder B, Franz G American Mineralogist 93 (2008) 573-583 Crystal structures of synthetic melanotekite (Pb2Fe2Si2O9), kentrolite (Pb2Mn2Si2O9), and the aluminum analogue (Pb2Al2Si2O9) Locality: synthetic _database_code_amcsd 0004535 CELL PARAMETERS: 6.9788 11.0164 10.0881 90.000 90.000 90.000 SPACE GROUP: Pbcn X-RAY WAVELENGTH: 1.541838 Cell Volume: 775.586 Density (g/cm3): 6.219 MAX. ABS. INTENSITY / VOLUME**2: 75.66451227 RIR: 3.962 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 16.09 52.44 5.5082 0 2 0 2 17.42 3.69 5.0900 1 1 1 8 17.58 47.37 5.0441 0 0 2 2 18.35 5.52 4.8345 0 2 1 4 21.74 2.14 4.0880 1 0 2 4 22.37 3.63 3.9741 1 2 1 8 23.21 3.53 3.8327 1 1 2 8 23.92 39.45 3.7200 0 2 2 4 25.53 45.48 3.4894 2 0 0 2 27.16 1.78 3.2827 1 2 2 8 27.45 55.49 3.2497 1 3 0 4 28.25 20.16 3.1592 2 1 1 8 28.86 8.37 3.0932 1 3 1 8 30.32 23.84 2.9477 2 2 0 4 30.61 100.00 2.9209 1 1 3 8 31.16 17.42 2.8701 0 2 3 4 31.17 45.30 2.8697 2 0 2 4 31.62 28.08 2.8294 2 2 1 8 32.51 1.19 2.7541 0 4 0 2 32.78 97.74 2.7318 1 3 2 8 33.74 13.62 2.6569 0 4 1 4 35.27 10.99 2.5450 2 2 2 8 35.60 9.53 2.5220 0 0 4 2 36.18 6.52 2.4830 1 4 1 8 36.63 3.90 2.4536 2 3 1 8 37.20 5.10 2.4172 0 4 2 4 37.93 6.77 2.3719 1 0 4 4 38.05 1.53 2.3649 2 1 3 8 38.53 7.67 2.3368 1 3 3 8 39.45 1.87 2.2841 1 4 2 8 40.63 1.85 2.2203 3 1 1 8 40.70 3.85 2.2166 2 2 3 8 41.45 1.75 2.1785 1 2 4 8 41.78 2.43 2.1619 2 4 0 4 42.42 10.97 2.1307 0 4 3 4 42.78 4.56 2.1139 2 4 1 8 42.81 3.07 2.1124 3 0 2 4 43.05 16.93 2.1011 1 5 0 4 43.16 7.58 2.0962 3 2 1 8 43.63 1.30 2.0746 3 1 2 8 44.32 7.29 2.0440 2 0 4 4 45.53 2.44 1.9924 1 3 4 8 45.66 5.53 1.9870 2 4 2 8 46.02 4.01 1.9724 3 2 2 8 46.20 5.38 1.9651 3 3 0 4 46.84 17.24 1.9395 1 5 2 8 47.64 21.77 1.9089 1 1 5 8 48.02 8.87 1.8945 0 2 5 4 48.28 12.13 1.8849 3 1 3 8 49.65 3.34 1.8361 0 6 0 2 49.80 25.50 1.8311 3 3 2 8 50.17 13.18 1.8185 2 4 3 8 50.50 1.31 1.8072 3 2 3 8 51.14 3.00 1.7860 2 3 4 8 52.27 7.16 1.7502 3 4 1 8 52.31 1.37 1.7488 1 6 1 8 52.35 2.55 1.7476 2 5 2 8 52.45 4.23 1.7447 4 0 0 2 53.08 3.37 1.7253 0 6 2 4 53.45 10.00 1.7141 1 3 5 8 53.60 3.61 1.7099 3 0 4 4 53.98 5.96 1.6986 4 1 1 8 54.05 2.92 1.6967 3 3 3 8 54.29 1.93 1.6897 3 1 4 8 54.58 1.25 1.6814 0 0 6 2 55.17 13.97 1.6650 2 2 5 8 56.34 3.49 1.6331 3 2 4 8 56.54 17.69 1.6276 0 4 5 4 56.65 7.34 1.6249 2 6 0 4 57.16 7.17 1.6115 0 6 3 4 57.29 1.23 1.6081 0 2 6 4 57.62 3.34 1.5997 3 5 0 4 58.77 2.22 1.5712 3 4 3 8 59.36 2.64 1.5570 4 3 1 8 60.29 9.94 1.5352 1 7 0 4 60.36 3.30 1.5336 4 1 3 8 60.74 1.36 1.5248 3 5 2 8 61.41 4.78 1.5098 3 1 5 8 61.66 2.40 1.5042 4 3 2 8 61.92 2.49 1.4985 2 5 4 8 63.02 9.68 1.4750 2 4 5 8 63.32 4.46 1.4687 1 7 2 8 63.60 6.54 1.4630 2 6 3 8 63.72 2.83 1.4605 2 2 6 8 63.82 1.41 1.4584 4 4 1 8 64.99 1.35 1.4351 0 4 6 4 65.00 2.26 1.4348 4 0 4 4 65.41 2.50 1.4267 3 6 1 8 66.04 1.94 1.4147 4 4 2 8 66.81 1.17 1.4002 2 3 6 8 66.83 8.94 1.3999 1 1 7 8 67.01 4.00 1.3966 1 7 3 8 67.14 1.85 1.3942 0 2 7 4 68.09 1.17 1.3771 0 8 0 2 68.72 2.95 1.3659 2 6 4 8 68.91 1.90 1.3627 3 0 6 4 69.18 3.52 1.3580 0 6 5 4 70.18 1.29 1.3410 5 2 1 8 70.46 1.88 1.3364 4 3 4 8 70.95 1.63 1.3284 0 8 2 4 71.18 1.20 1.3247 3 6 3 8 71.29 1.92 1.3228 3 2 6 8 71.46 1.01 1.3201 4 5 2 8 71.63 1.14 1.3174 1 3 7 8 71.92 1.81 1.3128 1 5 6 8 72.01 2.09 1.3114 1 7 4 8 72.52 1.16 1.3035 3 7 0 4 74.01 1.46 1.2809 2 8 0 4 74.04 1.54 1.2804 5 1 3 8 74.28 1.05 1.2769 0 4 7 4 74.45 1.16 1.2743 0 8 3 4 75.06 3.28 1.2655 2 6 5 8 75.23 1.54 1.2631 5 3 2 8 75.30 2.07 1.2620 3 7 2 8 76.29 1.06 1.2482 2 5 6 8 76.37 1.56 1.2470 2 7 4 8 76.77 2.37 1.2415 2 8 2 8 77.20 2.51 1.2356 5 4 1 8 77.39 1.18 1.2331 1 1 8 8 77.68 2.70 1.2292 0 2 8 4 78.25 2.78 1.2218 1 7 5 8 78.29 1.04 1.2212 5 0 4 4 78.57 3.19 1.2176 3 1 7 8 78.74 2.36 1.2154 3 7 3 8 79.76 2.36 1.2024 4 5 4 8 80.02 3.68 1.1991 2 4 7 8 80.18 1.17 1.1971 1 9 1 8 80.57 1.90 1.1923 5 2 4 8 80.75 2.24 1.1901 4 4 5 8 81.27 1.19 1.1838 4 6 3 8 81.95 2.71 1.1756 1 3 8 8 82.64 1.02 1.1676 5 4 3 8 83.23 1.10 1.1608 4 7 1 8 83.36 1.85 1.1594 2 2 8 8 84.21 1.51 1.1498 4 3 6 8 84.26 2.27 1.1492 6 1 1 8 84.41 1.06 1.1475 2 9 1 8 85.58 2.76 1.1349 1 9 3 8 85.69 1.56 1.1336 0 6 7 4 88.53 2.01 1.1045 5 6 1 8 88.68 1.13 1.1030 3 1 8 8 88.82 1.60 1.1016 0 10 0 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.