Eakerite Uchida H, Downs R T, Thompson R M Acta Crystallographica E63 (2007) i47-i49 Reinvestigation of eakerite, Ca2SnAl2Si6O18(OH)2*2H2O: H-atom positions by single-crystal X-ray diffraction and correlation with Raman spectroscopic data Locality: Foote Mineral Company mine, Kings Mountain, North Carolina, USA _database_code_amcsd 0010472 CELL PARAMETERS: 15.8202 7.6963 7.4449 90.000 101.293 90.000 SPACE GROUP: P2_1/a X-RAY WAVELENGTH: 1.541838 Cell Volume: 888.918 Density (g/cm3): 2.911 MAX. ABS. INTENSITY / VOLUME**2: 8.033918649 RIR: 0.899 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.41 29.28 7.7569 2 0 0 2 12.12 49.73 7.3008 0 0 1 2 12.84 56.81 6.8945 1 1 0 4 14.95 45.07 5.9271 -2 0 1 2 16.22 5.43 5.4634 2 1 0 4 16.74 8.57 5.2967 0 1 1 4 16.90 65.16 5.2457 -1 1 1 4 18.25 8.77 4.8624 2 0 1 2 18.45 100.00 4.8081 1 1 1 4 18.90 4.27 4.6959 -2 1 1 4 20.69 2.69 4.2923 3 1 0 4 21.62 10.02 4.1107 2 1 1 4 22.25 50.98 3.9948 -3 1 1 4 22.93 69.06 3.8785 4 0 0 2 23.78 1.02 3.7422 -4 0 1 2 23.82 11.73 3.7350 1 2 0 4 24.38 2.82 3.6504 0 0 2 2 24.84 3.84 3.5844 -2 0 2 2 25.72 8.28 3.4635 4 1 0 4 25.73 12.27 3.4625 3 1 1 4 25.84 2.05 3.4473 2 2 0 4 26.18 18.22 3.4042 0 2 1 4 26.28 32.15 3.3905 -1 2 1 4 26.48 9.69 3.3655 -4 1 1 4 26.62 47.55 3.3489 -1 1 2 4 27.03 12.17 3.2982 0 1 2 4 27.64 45.17 3.2276 -2 2 1 4 28.09 6.91 3.1771 4 0 1 2 28.65 24.76 3.1159 1 1 2 4 28.92 4.85 3.0872 3 2 0 4 29.00 10.96 3.0788 2 0 2 2 29.43 12.78 3.0348 -3 1 2 4 29.60 68.54 3.0175 2 2 1 4 30.08 3.49 2.9707 -3 2 1 4 30.16 4.41 2.9636 -4 0 2 2 30.44 10.52 2.9367 4 1 1 4 31.08 3.93 2.8777 5 1 0 4 31.29 4.57 2.8586 2 1 2 4 32.37 22.41 2.7656 -4 1 2 4 32.78 5.92 2.7317 4 2 0 4 33.40 1.96 2.6828 -4 2 1 4 33.51 6.00 2.6744 -1 2 2 4 33.85 2.16 2.6484 0 2 2 4 34.19 24.72 2.6228 -2 2 2 4 34.46 8.45 2.6030 -6 0 1 2 34.69 13.66 2.5856 6 0 0 2 34.75 9.05 2.5814 3 1 2 4 35.18 10.03 2.5512 1 2 2 4 35.47 4.06 2.5311 1 3 0 4 35.55 35.48 2.5253 5 1 1 4 35.83 1.98 2.5061 -3 2 2 4 36.06 18.60 2.4905 -5 1 2 4 36.44 1.02 2.4658 -6 1 1 4 36.66 6.24 2.4510 6 1 0 4 36.90 1.03 2.4357 2 3 0 4 36.94 7.79 2.4336 0 0 3 2 37.15 1.90 2.4204 0 3 1 4 37.22 5.24 2.4154 -1 3 1 4 37.41 7.99 2.4041 2 2 2 4 38.13 9.69 2.3602 -1 1 3 4 38.34 23.04 2.3480 -4 2 2 4 38.36 2.16 2.3466 -2 1 3 4 38.53 5.32 2.3368 -6 0 2 2 38.81 1.58 2.3203 0 1 3 4 38.85 7.28 2.3183 4 1 2 4 39.17 11.78 2.2997 6 0 1 2 39.20 21.58 2.2982 3 3 0 4 39.68 13.10 2.2713 -4 0 3 2 40.09 16.11 2.2489 -3 3 1 4 40.41 1.07 2.2321 3 2 2 4 40.99 2.41 2.2021 2 0 3 2 41.11 3.70 2.1955 5 2 1 4 41.45 3.34 2.1785 -4 1 3 4 41.57 3.30 2.1725 -5 2 2 4 41.89 4.05 2.1565 -7 1 1 4 41.90 4.62 2.1561 -6 2 1 4 42.10 1.65 2.1462 6 2 0 4 42.44 2.97 2.1297 7 1 0 4 42.82 15.83 2.1118 -1 3 2 4 43.37 1.17 2.0862 -2 3 2 4 43.43 13.33 2.0834 5 1 2 4 43.62 9.54 2.0750 -2 2 3 4 44.16 6.40 2.0509 -5 1 3 4 44.64 1.13 2.0300 -3 2 3 4 44.73 7.45 2.0260 -3 3 2 4 45.41 1.32 1.9974 -6 2 2 4 45.43 1.21 1.9964 1 2 3 4 45.44 2.33 1.9960 4 3 1 4 45.93 2.51 1.9757 -6 0 3 2 45.97 4.91 1.9741 6 2 1 4 46.05 2.74 1.9709 2 3 2 4 46.42 4.13 1.9560 -4 2 3 4 46.62 1.34 1.9483 7 1 1 4 46.87 2.61 1.9385 6 0 2 2 47.24 5.75 1.9241 0 4 0 2 47.51 1.46 1.9137 -6 1 3 4 47.58 3.85 1.9113 2 2 3 4 47.62 3.24 1.9094 1 4 0 4 47.86 3.69 1.9006 4 0 3 2 48.42 6.95 1.8798 6 1 2 4 48.62 3.79 1.8727 3 3 2 4 48.76 4.64 1.8675 2 4 0 4 48.98 1.48 1.8597 -2 0 4 2 49.02 3.14 1.8583 -1 4 1 4 49.62 1.25 1.8372 -5 3 2 4 49.75 4.14 1.8326 -7 2 2 4 49.97 4.19 1.8252 0 0 4 2 50.18 3.94 1.8181 -8 1 2 4 50.49 1.33 1.8077 -2 1 4 4 50.62 6.17 1.8033 3 4 0 4 50.95 1.29 1.7922 -4 0 4 2 51.05 3.29 1.7891 2 4 1 4 51.10 2.61 1.7875 -3 1 4 4 51.24 4.26 1.7829 -1 3 3 4 51.42 2.12 1.7769 -7 1 3 4 52.10 1.49 1.7554 -8 2 1 4 52.32 10.15 1.7486 -3 3 3 4 52.51 1.11 1.7428 8 1 1 4 52.87 8.86 1.7318 8 2 0 4 52.88 5.85 1.7312 6 2 2 4 53.00 1.68 1.7276 1 1 4 4 53.03 3.37 1.7269 1 3 3 4 53.14 8.40 1.7236 4 4 0 4 53.52 2.95 1.7123 -9 1 1 4 53.76 2.14 1.7052 7 1 2 4 53.79 3.42 1.7041 4 2 3 4 53.86 4.76 1.7021 0 4 2 4 54.10 2.43 1.6953 -2 4 2 4 54.28 10.32 1.6901 -7 3 1 4 54.53 6.66 1.6827 -8 2 2 4 54.73 5.10 1.6771 7 3 0 4 54.83 8.45 1.6744 -2 2 4 4 55.22 1.53 1.6636 2 1 4 4 55.40 2.99 1.6584 -3 2 4 4 55.55 2.57 1.6542 5 3 2 4 55.62 6.81 1.6524 -9 1 2 4 55.66 4.31 1.6512 -6 0 4 2 56.66 1.54 1.6246 -4 2 4 4 56.74 2.99 1.6225 8 2 1 4 56.80 4.74 1.6208 6 0 3 2 56.92 5.18 1.6176 -7 3 2 4 57.04 6.16 1.6145 -6 1 4 4 57.50 17.05 1.6027 3 3 3 4 57.70 3.82 1.5978 -9 2 1 4 58.17 3.03 1.5860 6 1 3 4 58.24 1.67 1.5841 7 3 1 4 58.34 4.27 1.5818 -10 0 1 2 58.63 3.88 1.5746 9 1 1 4 58.69 1.59 1.5731 9 2 0 4 59.32 5.52 1.5580 2 2 4 4 59.59 1.67 1.5514 10 0 0 2 59.77 4.11 1.5473 -6 4 1 4 59.89 3.22 1.5443 -8 2 3 4 60.06 2.92 1.5405 -10 0 2 2 60.10 2.19 1.5394 4 0 4 2 60.25 2.36 1.5360 -7 1 4 4 61.07 2.37 1.5174 -6 2 4 4 61.11 3.62 1.5165 -2 4 3 4 61.32 1.20 1.5117 -8 3 2 4 61.38 2.27 1.5106 -10 1 2 4 61.43 1.26 1.5093 0 4 3 4 61.63 3.11 1.5050 -1 5 1 4 61.92 1.15 1.4987 -3 4 3 4 62.13 4.95 1.4940 -3 3 4 4 62.16 4.30 1.4933 1 5 1 4 62.42 2.06 1.4878 -7 3 3 4 62.99 2.61 1.4757 6 4 1 4 63.20 3.02 1.4713 7 1 3 4 63.34 1.50 1.4683 8 2 2 4 63.35 5.55 1.4681 -4 4 3 4 63.38 2.31 1.4675 2 5 1 4 63.60 3.62 1.4630 -10 2 1 4 63.65 1.86 1.4620 -3 5 1 4 63.72 1.22 1.4605 10 0 1 2 63.82 7.04 1.4585 1 3 4 4 64.02 2.34 1.4544 -1 1 5 4 64.27 2.38 1.4492 -9 3 1 4 64.31 1.25 1.4486 5 3 3 4 64.49 1.62 1.4449 7 3 2 4 64.61 1.32 1.4425 -10 0 3 2 64.81 2.10 1.4385 -4 1 5 4 65.00 1.06 1.4349 10 1 1 4 65.21 1.45 1.4308 9 3 0 4 65.28 3.98 1.4293 4 2 4 4 65.33 4.99 1.4284 5 1 4 4 65.37 3.01 1.4275 9 1 2 4 65.64 5.55 1.4223 -1 5 2 4 66.31 6.51 1.4095 -5 1 5 4 66.61 2.11 1.4039 1 1 5 4 66.67 1.53 1.4028 1 5 2 4 67.17 1.39 1.3936 -6 0 5 2 67.38 1.44 1.3898 8 0 3 2 67.44 2.49 1.3886 -2 2 5 4 67.52 1.73 1.3873 11 1 0 4 67.77 1.54 1.3828 -8 2 4 4 67.80 1.26 1.3822 -1 2 5 4 68.09 1.01 1.3770 -5 5 1 4 68.72 3.78 1.3659 8 4 0 4 69.52 2.73 1.3522 4 4 3 4 70.61 5.73 1.3339 5 5 1 4 70.93 4.01 1.3287 -5 5 2 4 71.50 3.53 1.3195 -11 1 3 4 71.56 2.71 1.3186 3 1 5 4 71.89 1.44 1.3133 -9 2 4 4 72.01 1.22 1.3114 -4 4 4 4 72.08 3.65 1.3103 8 4 1 4 72.46 4.14 1.3044 2 2 5 4 72.71 2.16 1.3005 4 5 2 4 72.79 1.62 1.2992 -12 1 1 4 72.93 3.87 1.2972 -9 4 1 4 73.12 2.52 1.2942 7 3 3 4 73.88 3.44 1.2827 0 6 0 2 74.37 1.80 1.2756 2 4 4 4 74.63 1.23 1.2717 -4 3 5 4 74.69 1.17 1.2709 -7 2 5 4 74.86 1.34 1.2684 4 1 5 4 74.88 3.07 1.2681 -8 4 3 4 75.10 1.32 1.2649 -11 2 3 4 75.21 1.77 1.2634 0 6 1 4 75.75 1.40 1.2558 1 6 1 4 75.83 1.61 1.2545 -11 3 1 4 75.84 5.08 1.2544 5 5 2 4 75.89 2.05 1.2537 -2 6 1 4 76.34 1.38 1.2474 -12 0 3 2 76.36 1.48 1.2472 -5 5 3 4 76.50 1.15 1.2453 -10 2 4 4 77.11 1.25 1.2369 -11 3 2 4 77.41 1.30 1.2329 -12 2 2 4 77.48 1.29 1.2319 -4 0 6 2 77.96 1.08 1.2255 12 2 0 4 77.99 1.08 1.2251 9 2 3 4 78.03 1.86 1.2246 -9 1 5 4 78.09 1.43 1.2238 -11 1 4 4 78.24 1.32 1.2219 -10 4 1 4 78.55 1.10 1.2178 4 6 0 4 78.63 2.72 1.2168 0 0 6 2 79.34 2.12 1.2077 10 4 0 4 79.79 1.18 1.2020 4 4 4 4 79.81 1.96 1.2017 -5 1 6 4 79.84 1.46 1.2014 -13 1 1 4 80.58 1.46 1.1922 -7 3 5 4 81.13 2.02 1.1854 -10 0 5 2 81.52 1.84 1.1808 1 1 6 4 82.12 1.10 1.1736 -1 4 5 4 82.13 1.68 1.1736 12 2 1 4 83.10 1.30 1.1623 1 5 4 4 83.38 3.84 1.1591 8 2 4 4 83.82 1.58 1.1541 -10 4 3 4 84.14 1.26 1.1506 -6 6 1 4 84.25 1.34 1.1494 -5 5 4 4 85.23 1.28 1.1386 -9 5 2 4 85.59 1.61 1.1347 0 6 3 4 85.98 1.02 1.1306 -9 4 4 4 86.50 1.15 1.1252 6 2 5 4 87.19 2.27 1.1180 -12 2 4 4 87.32 1.17 1.1167 -9 3 5 4 87.36 1.29 1.1163 -3 3 6 4 87.36 1.59 1.1162 11 1 3 4 87.76 1.28 1.1121 9 5 1 4 88.67 1.81 1.1032 -7 4 5 4 89.86 1.52 1.0916 -13 -3 2 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.