Olmsteadite Moore P B, Araki T, Kampf A R, Steele I M American Mineralogist 61 (1976) 5-11 Olmstaedite, K2Fe2[Fe2(Nb,Ta)2O4(H2O)4(PO4)4], a new species, its crystal structure and relation to vauxite and montgomeryite _database_code_amcsd 0000485 CELL PARAMETERS: 7.5120 10.0000 6.4920 90.000 90.000 90.000 SPACE GROUP: Pb2_1m X-RAY WAVELENGTH: 1.541838 Cell Volume: 487.679 Density (g/cm3): 3.691 MAX. ABS. INTENSITY / VOLUME**2: 29.62687284 RIR: 2.614 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.78 22.04 7.5120 1 0 0 2 13.64 37.48 6.4920 0 0 1 2 14.75 100.00 6.0061 1 1 0 2 18.06 2.93 4.9119 1 0 1 4 20.14 28.78 4.4088 1 1 1 4 21.35 17.72 4.1623 1 2 0 2 22.44 14.59 3.9613 0 2 1 2 23.69 3.01 3.7560 2 0 0 2 25.33 7.46 3.5162 2 1 0 2 25.42 10.17 3.5040 1 2 1 4 27.43 18.60 3.2511 2 0 1 4 27.48 7.14 3.2460 0 0 2 2 28.88 4.28 3.0918 2 1 1 4 29.31 50.68 3.0468 1 3 0 2 29.75 63.53 3.0031 2 2 0 2 29.99 16.67 2.9797 1 0 2 4 31.32 52.57 2.8556 1 1 2 4 32.46 14.04 2.7582 1 3 1 4 32.86 4.24 2.7256 2 2 1 4 32.90 26.99 2.7226 0 2 2 2 35.06 25.84 2.5597 1 2 2 4 35.86 3.33 2.5040 3 0 0 2 35.92 10.16 2.5000 0 4 0 1 36.02 3.59 2.4931 2 3 0 2 36.59 5.67 2.4559 2 0 2 4 37.01 2.09 2.4290 3 1 0 2 37.72 3.56 2.3851 2 1 2 4 38.54 3.70 2.3362 3 0 1 4 38.59 1.18 2.3330 0 4 1 2 38.69 2.19 2.3274 2 3 1 4 39.62 8.34 2.2750 3 1 1 4 40.28 1.21 2.2389 3 2 0 2 40.49 1.33 2.2280 1 4 1 4 40.61 3.61 2.2215 1 3 2 4 40.94 1.47 2.2044 2 2 2 4 41.74 2.40 2.1640 0 0 3 2 43.48 1.47 2.0811 2 4 0 2 43.52 1.50 2.0794 1 0 3 4 44.50 7.45 2.0359 1 1 3 4 45.30 13.28 2.0020 3 3 0 2 45.68 6.56 1.9860 0 2 3 2 45.76 2.39 1.9826 3 0 2 4 45.78 7.04 1.9818 2 4 1 4 45.81 1.17 1.9807 0 4 2 2 45.90 1.91 1.9772 2 3 2 4 46.71 7.98 1.9448 3 1 2 4 47.02 6.17 1.9327 1 5 0 2 47.47 12.35 1.9152 1 4 2 4 47.53 6.36 1.9131 3 3 1 4 48.47 6.62 1.8780 4 0 0 2 48.55 5.95 1.8751 2 0 3 4 49.19 2.92 1.8523 1 5 1 4 49.38 2.43 1.8457 4 1 0 2 49.45 4.82 1.8430 3 2 2 4 49.46 1.51 1.8429 2 1 3 4 50.60 1.16 1.8040 4 0 1 4 51.47 2.02 1.7754 4 1 1 4 51.67 2.64 1.7692 3 4 0 2 51.82 4.94 1.7643 1 3 3 4 52.09 1.54 1.7557 2 2 3 4 52.21 22.18 1.7520 2 4 2 4 53.70 3.70 1.7069 3 4 1 4 53.80 5.56 1.7040 3 3 2 4 54.04 5.88 1.6970 4 2 1 4 55.32 2.76 1.6606 1 5 2 4 56.18 1.96 1.6373 3 0 3 4 56.22 1.50 1.6362 4 3 0 2 56.29 2.07 1.6342 2 3 3 4 56.56 1.41 1.6271 1 6 0 2 56.72 11.30 1.6230 0 0 4 2 56.99 3.82 1.6158 3 1 3 4 57.05 2.64 1.6143 0 6 1 2 57.43 1.48 1.6045 4 1 2 4 58.14 4.94 1.5866 4 3 1 4 58.48 1.01 1.5783 1 6 1 4 58.95 4.08 1.5668 1 1 4 4 59.12 3.60 1.5627 3 5 0 2 59.40 1.04 1.5560 3 2 3 4 59.51 3.62 1.5534 3 4 2 4 59.83 8.22 1.5459 4 2 2 4 60.80 10.69 1.5234 2 6 0 2 60.98 1.06 1.5193 3 5 1 4 61.30 1.30 1.5121 1 2 4 4 61.78 3.47 1.5015 4 4 0 2 61.85 4.16 1.5000 2 4 3 4 62.64 2.43 1.4831 2 6 1 4 62.66 4.61 1.4826 0 6 2 2 63.28 2.86 1.4696 3 3 3 4 63.60 1.80 1.4629 4 4 1 4 64.01 1.91 1.4546 1 6 2 4 64.32 1.98 1.4483 5 1 1 4 64.66 2.74 1.4415 1 5 3 4 64.79 2.04 1.4388 5 2 0 2 65.12 5.24 1.4324 1 3 4 4 65.36 9.46 1.4278 2 2 4 4 66.39 2.15 1.4080 3 5 2 4 66.57 2.31 1.4048 5 2 1 4 66.59 1.70 1.4043 4 1 3 4 66.64 2.02 1.4034 1 7 0 2 67.97 1.54 1.3791 2 6 2 4 68.39 1.15 1.3717 1 7 1 4 68.50 1.58 1.3697 3 4 3 4 68.80 3.78 1.3645 4 2 3 4 68.86 2.38 1.3634 5 0 2 4 68.99 2.73 1.3613 0 4 4 2 69.59 3.36 1.3509 5 1 2 4 70.23 1.40 1.3402 5 3 1 4 71.44 1.67 1.3204 0 6 3 2 72.41 4.04 1.3051 4 3 3 4 73.52 3.48 1.2882 1 7 2 4 74.35 2.37 1.2758 3 6 2 4 74.96 1.17 1.2669 3 5 3 4 75.39 3.17 1.2608 3 3 4 4 76.16 2.08 1.2500 0 8 0 1 76.67 1.91 1.2429 1 5 4 4 77.32 1.03 1.2341 5 0 3 4 77.78 2.04 1.2280 4 0 4 4 78.01 1.01 1.2248 5 1 3 4 78.37 1.01 1.2202 6 1 1 4 78.48 1.31 1.2188 3 7 1 4 78.80 1.03 1.2145 6 2 0 2 80.09 1.29 1.1982 5 2 3 4 80.39 1.03 1.1945 1 3 5 4 80.45 1.33 1.1938 6 2 1 4 81.49 1.61 1.1812 5 5 1 4 81.80 1.14 1.1775 1 7 3 4 82.61 1.22 1.1680 3 6 3 4 82.71 1.02 1.1667 2 8 1 4 82.98 1.37 1.1637 4 6 2 4 83.39 1.50 1.1590 3 7 2 4 86.44 1.85 1.1257 3 5 4 4 87.58 2.00 1.1140 2 8 2 4 87.90 5.17 1.1108 2 6 4 4 88.66 1.34 1.1032 6 4 1 4 88.76 2.48 1.1022 4 4 4 4 89.07 1.16 1.0992 1 9 0 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.