Weeksite Fejfarova K, Plasil J, Yang H, Cejka J, Dusek M, Downs R T, Barkley M C, Skoda R American Mineralogist 97 (2012) 750-754 Revision of the crystal structure and chemical formula of weeksite, K2(UO2)2(Si5O13)*4H2O Locality: Anderson mine, Arizona, USA _database_code_amcsd 0018760 CELL PARAMETERS: 14.1957 14.2291 9.6305 90.000 111.578 90.000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 1808.954 Density (g/cm3): 3.823 MAX. ABS. INTENSITY / VOLUME**2: 58.89334724 RIR: 5.016 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.88 56.08 8.9556 0 0 1 2 12.44 100.00 7.1146 0 2 0 2 13.41 1.42 6.6004 2 0 0 2 13.42 1.31 6.5968 -2 0 1 2 15.18 1.54 5.8353 1 1 1 4 15.91 53.70 5.5706 0 2 1 4 18.34 6.55 4.8388 2 2 0 4 18.34 7.13 4.8373 -2 2 1 4 19.42 15.71 4.5707 2 0 1 2 19.44 14.92 4.5672 -2 0 2 2 19.83 4.20 4.4778 0 0 2 2 21.11 1.29 4.2094 -1 3 1 4 23.13 19.33 3.8455 2 2 1 4 23.14 20.62 3.8434 -2 2 2 4 23.35 1.18 3.8102 1 3 1 4 23.39 1.23 3.8034 -3 1 2 4 25.03 26.56 3.5573 0 4 0 2 25.09 32.83 3.5489 -4 0 1 2 26.97 33.08 3.3060 0 4 1 4 27.02 3.56 3.3002 4 0 0 2 27.03 3.41 3.2984 -4 0 2 2 27.89 17.27 3.1990 2 0 2 2 27.91 16.52 3.1970 -2 0 3 2 28.10 45.30 3.1757 -4 2 1 4 28.50 2.75 3.1314 2 4 0 4 28.51 2.60 3.1311 -2 4 1 4 29.84 13.02 2.9938 4 2 0 4 29.86 13.13 2.9925 -4 2 2 4 29.93 8.38 2.9852 0 0 3 2 30.64 28.07 2.9177 2 2 2 4 30.66 29.11 2.9161 -2 2 3 4 31.88 2.77 2.8073 2 4 1 4 31.89 2.50 2.8064 -2 4 2 4 35.74 8.24 2.5124 -4 4 1 4 37.16 3.11 2.4194 4 4 0 4 37.17 2.99 2.4187 -4 4 2 4 37.35 5.25 2.4077 2 0 3 2 37.37 5.46 2.4065 -2 0 4 2 37.82 6.95 2.3787 2 4 2 4 37.84 6.64 2.3778 -2 4 3 4 37.94 5.63 2.3715 0 6 0 2 39.30 6.04 2.2925 0 6 1 4 39.40 3.12 2.2867 0 4 3 4 39.51 5.97 2.2807 2 2 3 4 39.53 5.61 2.2796 -2 2 4 4 40.28 5.17 2.2389 0 0 4 2 40.41 1.26 2.2318 2 6 0 4 40.42 1.39 2.2317 -2 6 1 4 41.02 6.38 2.2001 6 0 0 2 41.05 6.39 2.1989 -6 0 3 2 41.50 1.05 2.1759 4 2 2 4 42.32 5.24 2.1356 0 2 4 4 42.97 4.65 2.1050 2 6 1 4 42.97 4.96 2.1047 -2 6 2 4 43.03 2.76 2.1019 6 2 0 4 43.06 2.85 2.1009 -6 2 3 4 45.49 4.82 1.9939 2 4 3 4 45.51 5.04 1.9932 -2 4 4 4 45.95 7.34 1.9749 6 0 1 2 45.99 7.44 1.9735 -6 0 4 2 46.03 7.52 1.9718 -4 6 1 4 46.36 1.56 1.9583 -6 4 1 4 46.37 1.61 1.9581 -6 4 2 4 47.19 4.99 1.9258 4 6 0 4 47.20 5.07 1.9255 -4 6 2 4 47.74 5.05 1.9051 2 6 2 4 47.75 5.13 1.9047 -2 6 3 4 47.80 6.98 1.9030 6 2 1 4 47.83 6.79 1.9017 -6 2 4 4 48.01 5.74 1.8948 0 4 4 4 48.03 1.26 1.8943 4 0 3 2 48.07 1.36 1.8929 -4 0 5 2 48.66 4.37 1.8712 6 4 0 4 48.68 4.42 1.8704 -6 4 3 4 49.82 3.96 1.8305 4 2 3 4 49.85 3.76 1.8293 -4 2 5 4 50.99 4.46 1.7911 0 0 5 2 51.37 6.36 1.7786 0 8 0 2 51.50 4.00 1.7745 -8 0 2 2 52.45 3.81 1.7446 0 8 1 4 52.57 1.34 1.7409 -8 0 1 2 52.59 1.31 1.7404 -8 0 3 2 52.67 1.42 1.7378 6 0 2 2 52.70 4.48 1.7369 0 2 5 4 52.71 1.40 1.7365 -6 0 5 2 53.04 5.13 1.7267 6 4 1 4 53.07 5.16 1.7257 -6 4 4 4 53.20 6.41 1.7217 -8 2 2 4 54.25 1.81 1.6910 -8 2 1 4 54.26 1.77 1.6905 -8 2 3 4 54.29 4.38 1.6896 2 6 3 4 54.31 4.20 1.6891 -2 6 4 4 54.34 3.01 1.6882 6 2 2 4 54.39 2.95 1.6869 -6 2 5 4 55.43 2.53 1.6576 2 8 1 4 55.44 2.41 1.6574 -2 8 2 4 56.53 1.55 1.6280 0 6 4 4 57.11 1.44 1.6129 6 6 0 4 57.12 1.44 1.6124 -6 6 3 4 57.62 2.20 1.5998 0 4 5 4 57.63 2.26 1.5995 4 0 4 2 57.67 2.21 1.5985 -4 0 6 2 58.00 3.54 1.5901 -4 8 1 4 58.09 3.67 1.5879 -8 4 2 4 58.99 1.70 1.5657 4 8 0 4 59.00 1.62 1.5655 -4 8 2 4 59.17 2.17 1.5615 6 4 2 4 59.21 2.51 1.5606 4 2 4 4 59.21 2.15 1.5605 -6 4 5 4 59.25 2.59 1.5596 -4 2 6 4 59.46 2.42 1.5545 2 8 2 4 59.47 2.42 1.5543 -2 8 3 4 59.71 1.08 1.5487 -2 2 6 4 60.60 1.33 1.5280 0 8 3 4 61.06 2.46 1.5176 6 6 1 4 61.09 2.45 1.5170 -6 6 4 4 62.78 1.43 1.4801 4 6 3 4 62.81 1.37 1.4794 -4 6 5 4 63.71 1.76 1.4608 0 2 6 4 63.80 2.00 1.4588 4 4 4 4 63.84 1.91 1.4581 -4 4 6 4 65.21 2.42 1.4306 2 8 3 4 65.23 2.50 1.4304 -2 8 4 4 65.28 2.17 1.4293 0 6 5 4 65.61 1.01 1.4229 0 10 0 2 65.72 1.84 1.4208 -8 6 2 4 66.54 1.39 1.4053 0 10 1 4 66.64 1.73 1.4034 -8 6 1 4 66.66 1.66 1.4031 -8 6 3 4 66.73 2.03 1.4018 6 6 2 4 66.77 1.98 1.4010 -6 6 5 4 67.22 1.58 1.3927 0 8 4 4 67.75 2.21 1.3832 6 8 0 4 67.76 2.26 1.3829 -6 8 3 4 68.75 1.06 1.3653 8 2 2 4 68.81 1.13 1.3643 -8 2 6 4 69.30 1.06 1.3560 -10 2 1 4 69.32 1.07 1.3555 -10 2 4 4 69.62 1.00 1.3505 -4 2 7 4 71.09 1.38 1.3261 4 6 4 4 71.13 1.43 1.3255 -4 6 6 4 71.37 2.28 1.3217 6 8 1 4 71.39 2.26 1.3212 -6 8 4 4 71.42 2.06 1.3207 -4 10 1 4 71.46 1.25 1.3201 10 0 0 2 71.51 1.24 1.3194 -10 0 5 2 72.31 1.06 1.3066 4 10 0 4 72.32 1.11 1.3065 -4 10 2 4 72.74 1.91 1.3001 2 10 2 4 72.74 1.89 1.3000 -2 10 3 4 72.88 1.88 1.2979 10 2 0 4 72.92 1.87 1.2972 -10 2 5 4 73.83 1.13 1.2835 4 4 5 4 73.87 1.01 1.2829 -4 4 7 4 75.22 1.23 1.2632 0 6 6 4 75.30 1.99 1.2621 0 8 5 4 75.71 1.66 1.2562 -8 8 2 4 76.59 1.01 1.2439 -8 8 3 4 76.66 1.37 1.2430 6 8 2 4 76.70 1.36 1.2425 -6 8 5 4 76.76 1.26 1.2417 8 2 3 4 76.83 1.20 1.2408 -8 2 7 4 79.87 1.08 1.2009 0 10 4 4 80.81 1.14 1.1893 4 8 4 4 80.85 1.10 1.1889 -4 8 6 4 80.87 1.13 1.1886 8 4 3 4 80.94 1.17 1.1878 -8 4 7 4 81.34 1.23 1.1830 -12 0 3 2 82.23 1.10 1.1724 10 4 1 4 82.29 1.03 1.1717 -10 4 6 4 83.79 1.00 1.1545 6 10 1 4 83.82 1.00 1.1542 -6 10 4 4 83.88 1.13 1.1534 10 6 0 4 83.93 1.15 1.1529 -10 6 5 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.