Lopezite Brunton G Materials Research Bulletin 8 (1973) 271-274 Refinement of the structure of K2Cr2O7 Locality: synthetic _database_code_amcsd 0014228 CELL PARAMETERS: 7.4200 13.3990 7.3845 98.030 90.880 96.180 SPACE GROUP: P-1 X-RAY WAVELENGTH: 1.541838 Cell Volume: 722.403 Density (g/cm3): 2.705 MAX. ABS. INTENSITY / VOLUME**2: 6.402443997 RIR: 0.771 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 12.11 1.06 7.3086 0 0 1 2 12.99 4.86 6.8165 0 -1 1 2 13.09 3.81 6.7629 -1 1 0 2 13.43 17.13 6.5929 0 2 0 2 14.40 2.28 6.1515 1 1 0 2 14.67 9.24 6.0386 0 1 1 2 16.78 3.16 5.2833 0 -2 1 2 16.81 4.57 5.2727 -1 0 1 2 17.35 6.36 5.1124 1 0 1 2 17.46 17.47 5.0780 1 -1 1 2 17.97 5.38 4.9356 -1 -1 1 2 18.27 52.31 4.8570 -1 1 1 2 19.03 2.09 4.6644 1 2 0 2 19.70 23.36 4.5063 1 1 1 2 20.01 20.52 4.4367 1 -2 1 2 21.33 4.19 4.1654 -1 -2 1 2 23.83 11.51 3.7338 1 2 1 2 24.14 23.39 3.6867 2 0 0 2 24.27 1.16 3.6679 1 -3 1 2 24.33 29.32 3.6580 0 -1 2 2 24.36 46.89 3.6543 0 0 2 2 25.80 99.06 3.4526 2 1 0 2 26.09 13.61 3.4154 -1 -3 1 2 26.15 8.48 3.4082 0 -2 2 2 26.36 23.04 3.3815 -2 2 0 2 26.71 23.08 3.3381 -1 3 1 2 26.74 8.94 3.3333 -2 0 1 2 26.89 25.83 3.3152 -1 0 2 2 27.05 100.00 3.2964 0 4 0 2 27.17 4.01 3.2822 2 -1 1 2 27.22 37.69 3.2767 1 -1 2 2 27.36 7.10 3.2591 -2 1 1 2 27.58 17.94 3.2347 1 0 2 2 27.84 11.44 3.2047 -2 -1 1 2 28.07 6.88 3.1791 0 -4 1 2 28.59 3.65 3.1225 2 -2 1 2 29.03 3.71 3.0757 2 2 0 2 29.18 26.82 3.0606 -1 -2 2 2 29.33 21.25 3.0450 2 1 1 2 29.48 4.04 3.0297 0 -3 2 2 29.54 16.49 3.0240 1 -4 1 2 29.56 1.46 3.0219 1 1 2 2 29.59 21.69 3.0193 0 2 2 2 29.60 2.80 3.0180 -2 2 1 2 29.86 44.35 2.9927 -2 3 0 2 30.48 9.96 2.9331 -2 -2 1 2 30.92 1.42 2.8922 1 4 0 2 31.14 42.96 2.8720 -1 2 2 2 31.31 6.04 2.8566 0 4 1 2 31.34 21.76 2.8538 1 -3 2 2 31.48 3.36 2.8420 2 -3 1 2 32.52 7.04 2.7536 -1 -3 2 2 32.90 1.53 2.7222 1 2 2 2 33.15 5.48 2.7024 -2 3 1 2 33.41 3.36 2.6819 2 3 0 2 33.94 14.23 2.6416 0 -4 2 2 34.01 1.74 2.6364 -2 0 2 2 34.06 8.08 2.6320 0 3 2 2 34.34 2.87 2.6117 -2 -3 1 2 34.43 5.02 2.6051 -2 4 0 2 34.54 7.17 2.5969 -2 -1 2 2 34.54 7.63 2.5965 2 -1 2 2 34.89 13.74 2.5716 1 4 1 2 35.32 8.89 2.5411 1 -4 2 2 35.35 2.33 2.5390 2 -2 2 2 35.44 2.75 2.5327 1 -5 1 2 35.52 14.25 2.5273 2 -4 1 2 36.41 10.60 2.4678 -2 -2 2 2 36.94 3.55 2.4333 2 3 1 2 36.98 8.79 2.4307 2 1 2 2 37.28 1.09 2.4120 1 3 2 2 37.45 1.17 2.4014 2 -3 2 2 37.47 1.76 2.4001 1 5 0 2 37.61 1.89 2.3914 -3 2 0 2 37.69 5.00 2.3865 -2 4 1 2 37.79 16.02 2.3809 -1 -5 1 2 38.47 1.06 2.3400 -1 -1 3 2 38.52 1.73 2.3370 0 1 3 2 38.60 3.64 2.3322 2 4 0 2 38.72 2.85 2.3253 1 -1 3 2 39.18 5.31 2.2992 0 -5 2 2 39.32 2.24 2.2913 -3 -1 1 2 39.33 5.08 2.2910 0 4 2 2 39.39 1.63 2.2874 3 -2 1 2 39.63 2.16 2.2744 -1 -2 3 2 39.67 3.13 2.2722 0 -3 3 2 39.92 2.27 2.2585 -3 2 1 2 40.07 3.52 2.2502 -1 4 2 2 40.17 7.45 2.2448 1 -5 2 2 40.30 3.48 2.2380 -2 3 2 2 40.42 1.79 2.2316 2 -5 1 2 40.67 1.21 2.2183 2 -4 2 2 41.19 4.53 2.1915 1 5 1 2 41.38 4.20 2.1818 3 -3 1 2 41.94 2.25 2.1542 -1 -3 3 2 42.06 1.33 2.1483 2 4 1 2 42.06 4.23 2.1483 -1 -5 2 2 42.43 8.71 2.1304 1 4 2 2 42.49 4.43 2.1276 -3 3 1 2 43.45 6.98 2.0827 -2 -4 2 2 43.91 1.26 2.0620 -2 0 3 2 43.95 2.27 2.0602 1 2 3 2 44.01 10.73 2.0576 2 3 2 2 44.22 7.63 2.0482 -3 1 2 2 44.28 1.75 2.0455 -1 -6 1 2 44.40 10.45 2.0405 2 5 0 2 44.40 2.14 2.0402 -3 -1 2 2 44.43 5.59 2.0389 3 -4 1 2 44.56 6.88 2.0334 -2 -5 1 2 45.04 1.82 2.0129 0 3 3 2 45.09 4.76 2.0109 3 0 2 2 45.27 1.75 2.0033 -1 -4 3 2 45.31 1.07 2.0015 -2 -2 3 2 45.79 6.94 1.9816 -3 2 2 2 46.37 8.09 1.9580 3 -3 2 2 46.84 4.05 1.9396 3 1 2 2 47.04 2.77 1.9316 0 -5 3 2 47.74 3.69 1.9052 1 3 3 2 47.78 3.80 1.9037 2 5 1 2 47.81 3.14 1.9024 -1 -6 2 2 48.38 1.71 1.8815 -3 3 2 2 48.47 1.34 1.8782 1 -7 1 2 48.78 1.15 1.8669 2 4 2 2 48.81 8.13 1.8656 2 -4 3 2 48.89 5.85 1.8629 -3 -3 2 2 48.91 2.52 1.8623 3 -4 2 2 49.45 2.12 1.8431 -1 -5 3 2 49.59 2.04 1.8383 0 4 3 2 49.87 1.09 1.8286 -4 2 0 2 49.94 6.78 1.8263 -2 3 3 2 50.66 2.73 1.8018 -4 1 1 2 50.76 1.33 1.7984 4 1 0 2 50.80 1.13 1.7973 -1 -1 4 2 51.20 8.03 1.7841 1 -1 4 2 51.31 2.14 1.7806 0 -7 2 2 51.40 1.42 1.7776 4 -2 1 2 51.48 4.15 1.7752 -1 -2 4 2 51.60 2.06 1.7714 -4 3 0 2 51.62 1.02 1.7708 3 4 1 2 51.69 3.09 1.7684 -1 6 2 2 51.72 1.17 1.7674 1 -7 2 2 51.74 2.18 1.7668 -4 -1 1 2 51.87 2.12 1.7628 -3 4 2 2 51.92 3.36 1.7611 0 -6 3 2 51.93 3.94 1.7609 -1 7 1 2 52.20 1.54 1.7524 2 -5 3 2 52.35 1.83 1.7475 -3 -1 3 2 52.70 1.61 1.7369 -3 1 3 2 52.95 2.18 1.7293 3 -1 3 2 53.04 1.80 1.7266 4 1 1 2 53.08 3.11 1.7252 3 -6 1 2 53.51 2.36 1.7126 2 3 3 2 53.65 5.97 1.7082 -3 -2 3 2 53.67 2.01 1.7077 -2 -6 2 2 53.79 4.25 1.7041 3 0 3 2 54.06 1.04 1.6964 -1 -7 2 2 54.19 2.01 1.6927 3 -3 3 2 54.33 1.16 1.6885 -3 2 3 2 54.72 6.67 1.6774 -1 2 4 2 54.83 2.34 1.6743 1 7 1 2 55.21 1.01 1.6636 4 -4 1 2 55.48 1.60 1.6563 1 -8 1 2 55.48 6.10 1.6563 -3 6 1 2 55.58 1.73 1.6534 3 1 3 2 55.89 1.11 1.6452 -3 -3 3 2 56.15 1.20 1.6382 -3 5 2 2 56.47 1.15 1.6296 -4 2 2 2 56.64 1.07 1.6249 -4 -3 1 2 57.16 2.68 1.6116 4 -3 2 2 57.76 4.47 1.5962 -4 5 0 2 58.03 4.23 1.5893 1 -5 4 2 58.21 1.14 1.5848 -1 7 2 2 58.22 1.67 1.5847 1 -8 2 2 58.40 2.06 1.5803 -2 5 3 2 59.12 1.17 1.5626 -1 -5 4 2 59.26 1.23 1.5594 -3 -6 1 2 59.45 5.28 1.5548 3 6 0 2 59.68 3.57 1.5494 1 3 4 2 60.06 1.54 1.5406 -4 5 1 2 60.50 1.29 1.5303 -2 -4 4 2 60.63 2.69 1.5274 0 6 3 2 60.66 2.43 1.5267 2 7 1 2 61.18 1.24 1.5149 0 -6 4 2 61.76 1.19 1.5021 3 3 3 2 61.99 1.21 1.4969 -3 -6 2 2 62.15 1.08 1.4937 1 8 1 2 62.45 1.85 1.4871 4 -6 1 2 62.65 1.99 1.4828 3 5 2 2 62.90 1.04 1.4776 0 -9 1 2 63.20 1.13 1.4712 -3 1 4 2 63.30 1.22 1.4692 -1 -6 4 2 63.39 3.81 1.4674 -3 -2 4 2 63.49 1.31 1.4653 0 -8 3 2 64.37 1.38 1.4473 -5 3 0 2 64.37 3.38 1.4472 3 -8 1 2 64.45 1.07 1.4457 -4 6 1 2 64.48 3.83 1.4451 3 0 4 2 64.80 1.86 1.4387 -4 -5 1 2 64.89 1.24 1.4370 -3 2 4 2 65.21 1.01 1.4307 0 1 5 2 65.75 1.44 1.4202 -1 -9 1 2 65.79 2.18 1.4195 3 -4 4 2 66.00 2.06 1.4154 3 4 3 2 66.16 1.28 1.4124 -2 -8 2 2 66.42 2.79 1.4075 -1 5 4 2 66.42 2.65 1.4075 1 9 0 2 66.49 1.45 1.4062 1 -7 4 2 66.79 4.84 1.4007 2 -8 3 2 66.98 1.71 1.3972 0 7 3 2 67.45 1.17 1.3885 -3 -6 3 2 67.68 1.83 1.3844 4 5 1 2 69.45 1.20 1.3533 5 -3 2 2 69.49 1.00 1.3526 -5 5 0 2 69.51 1.08 1.3522 2 -3 5 2 69.53 2.49 1.3520 -2 7 3 2 70.08 2.25 1.3427 0 -9 3 2 70.70 1.26 1.3325 -3 4 4 2 71.44 1.06 1.3204 -2 2 5 2 71.73 1.12 1.3159 -1 6 4 2 71.80 1.02 1.3147 -4 -1 4 2 72.36 1.10 1.3059 -4 -6 2 2 72.37 1.76 1.3057 0 -6 5 2 72.51 1.15 1.3037 3 8 0 2 72.98 1.11 1.2963 -2 -7 4 2 73.12 1.27 1.2942 4 -1 4 2 73.68 1.76 1.2858 2 8 2 2 73.86 1.06 1.2831 0 8 3 2 74.35 1.47 1.2758 -5 1 3 2 74.49 1.05 1.2737 -3 0 5 2 75.31 1.01 1.2619 5 -2 3 2 75.39 1.33 1.2607 -5 6 1 2 75.63 1.21 1.2574 4 -7 3 2 76.54 1.77 1.2446 5 0 3 2 76.91 1.31 1.2396 3 0 5 2 77.90 1.70 1.2264 3 -10 1 2 77.95 1.46 1.2257 5 -7 1 2 78.29 2.89 1.2212 -5 -3 3 2 78.43 1.09 1.2193 0 -3 6 2 78.53 1.15 1.2180 -6 0 1 2 78.77 1.50 1.2149 6 -2 1 2 80.15 1.28 1.1974 0 1 6 2 80.96 1.09 1.1876 5 2 3 2 81.51 2.45 1.1809 -3 10 1 2 81.61 1.30 1.1797 -6 -2 1 2 82.05 1.14 1.1745 -2 5 5 2 83.03 1.33 1.1630 -1 11 1 2 83.06 1.21 1.1627 -2 9 3 2 83.36 2.05 1.1593 6 2 1 2 87.81 1.48 1.1117 3 10 0 2 88.45 1.26 1.1053 5 4 3 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.