Gedrite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R070531 Papike J J, Ross M American Mineralogist 55 (1970) 1945-1972 Gedrites: Crystal structures and intracrystalline cation distributions sample 001 CELL PARAMETERS: 18.5000 17.8000 5.2760 90.000 90.000 90.000 SPACE GROUP: Pnma ATOM X Y Z OCCUPANCY ISO(B) Si 0.23150 -0.16310 -0.44870 0.660 0.430 Al 0.23150 -0.16310 -0.44870 0.340 0.430 Si 0.02020 -0.16450 0.29710 0.620 0.420 Al 0.02020 -0.16450 0.29710 0.380 0.420 Si 0.22780 -0.07600 0.05020 1.000 0.460 Si 0.02660 -0.08020 -0.19850 0.840 0.580 Al 0.02660 -0.08020 -0.19850 0.160 0.580 Mg 0.12440 0.16110 0.37370 0.880 0.750 Fe 0.12440 0.16110 0.37370 0.120 0.750 Al 0.12480 0.07310 -0.12810 0.600 0.340 Mg 0.12480 0.07310 -0.12810 0.360 0.340 Fe 0.12480 0.07310 -0.12810 0.040 0.340 Mg 0.12490 0.25000 -0.12480 0.900 0.470 Fe 0.12490 0.25000 -0.12480 0.100 0.470 Mg 0.11890 -0.01450 0.36360 0.550 0.630 Fe 0.11890 -0.01450 0.36360 0.420 0.630 Ca 0.11890 -0.01450 0.36360 0.020 0.630 Na 0.11890 -0.01450 0.36360 0.010 0.630 Na 0.11510 -0.25000 0.85330 0.340 1.470 O 0.17960 0.16030 0.03120 1.000 0.400 O 0.06950 0.15840 -0.28600 1.000 0.920 O 0.18400 0.07370 -0.44360 1.000 1.050 O 0.06220 0.07420 0.18750 1.000 0.500 O 0.17970 0.25000 -0.45710 1.000 1.020 O 0.07000 0.25000 0.20870 1.000 0.750 O 0.18680 0.00220 0.04250 1.000 0.620 O 0.06790 -0.00460 -0.29850 1.000 0.740 O 0.19680 -0.10900 0.32060 1.000 1.060 O 0.05490 -0.10260 0.09430 1.000 0.720 O 0.20220 -0.13130 -0.17520 1.000 0.730 O 0.04720 -0.14500 -0.40970 1.000 1.490 O 0.20300 -0.25000 0.51380 1.000 0.650 O 0.04540 -0.25000 0.21530 1.000 1.310 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 0.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 16 +/- 16 +/- 4 MAX. ABS. INTENSITY / VOLUME**2: 4.890130296 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 9.94 67.70 8.9000 0 2 0 10.78 81.51 8.2079 2 1 0 17.48 1.10 5.0737 1 0 1 17.53 3.75 5.0585 0 1 1 17.76 5.15 4.9942 2 3 0 18.18 15.32 4.8794 1 1 1 19.37 3.43 4.5829 2 0 1 19.95 22.77 4.4500 0 4 0 20.01 11.49 4.4382 2 1 1 20.15 2.35 4.4078 1 2 1 21.65 9.69 4.1039 4 2 0 21.81 3.63 4.0745 2 2 1 22.74 2.81 3.9110 3 1 1 23.06 19.09 3.8561 1 3 1 24.54 42.50 3.6270 2 3 1 26.84 21.35 3.3218 3 3 1 27.54 15.66 3.2393 4 2 1 27.82 56.39 3.2067 4 4 0 27.95 1.74 3.1926 2 4 1 29.40 100.00 3.0381 6 1 0 29.49 1.17 3.0293 5 0 1 29.78 16.11 3.0004 4 3 1 29.92 1.59 2.9864 5 1 1 30.29 3.50 2.9510 0 5 1 30.68 7.49 2.9142 1 5 1 31.19 30.80 2.8678 5 2 1 31.83 56.24 2.8114 2 5 1 32.73 21.00 2.7360 6 3 0 33.21 12.40 2.6980 5 3 1 33.67 1.08 2.6621 6 0 1 33.67 46.03 2.6619 3 5 1 34.05 1.77 2.6328 6 1 1 34.34 2.30 2.6116 1 0 2 35.04 54.57 2.5610 1 6 1 35.19 9.34 2.5504 6 2 1 35.38 70.52 2.5369 2 0 2 35.96 1.93 2.4971 4 6 0 36.06 12.52 2.4904 2 6 1 36.10 27.85 2.4878 4 5 1 37.01 1.70 2.4288 6 3 1 37.07 15.05 2.4254 3 0 2 37.42 3.47 2.4032 3 1 2 37.72 3.74 2.3847 3 6 1 38.47 1.83 2.3401 3 2 2 38.63 5.40 2.3307 6 5 0 39.04 22.13 2.3071 5 5 1 39.46 6.32 2.2838 7 2 1 39.65 5.74 2.2733 1 7 1 39.66 3.02 2.2727 4 1 2 39.94 4.74 2.2571 4 6 1 40.57 10.08 2.2235 2 7 1 42.07 33.29 2.1480 5 0 2 42.28 1.78 2.1376 4 3 2 42.39 12.26 2.1325 5 1 2 42.45 4.40 2.1296 3 4 2 42.66 24.40 2.1196 5 6 1 42.95 1.39 2.1057 1 5 2 43.94 7.29 2.0604 8 2 1 44.12 1.27 2.0527 4 7 1 44.46 1.40 2.0377 1 8 1 44.88 3.65 2.0197 5 3 2 45.22 4.86 2.0050 4 8 0 45.80 30.69 1.9813 6 6 1 46.11 10.71 1.9688 7 5 1 46.28 3.24 1.9618 6 7 0 46.63 4.29 1.9476 5 7 1 46.98 1.98 1.9341 2 9 0 47.17 1.73 1.9268 4 5 2 48.77 9.25 1.8671 7 0 2 49.46 6.19 1.8427 1 9 1 49.54 7.42 1.8401 10 1 0 49.57 1.62 1.8391 5 5 2 49.90 7.00 1.8276 6 4 2 49.91 1.59 1.8273 7 2 2 50.01 1.38 1.8239 8 6 0 50.07 1.39 1.8219 1 7 2 50.12 7.97 1.8202 8 5 1 50.24 7.67 1.8159 2 9 1 51.33 2.39 1.7800 0 10 0 51.76 3.13 1.7661 10 3 0 52.90 8.61 1.7307 8 1 2 53.13 7.63 1.7238 8 6 1 53.20 5.98 1.7217 7 4 2 53.69 1.11 1.7072 6 8 1 54.07 2.94 1.6961 2 2 3 54.15 2.35 1.6937 1 8 2 54.41 4.43 1.6862 0 3 3 54.66 2.79 1.6792 1 3 3 54.89 3.35 1.6728 2 8 2 55.17 1.02 1.6647 6 9 0 55.29 4.86 1.6615 3 2 3 55.49 2.37 1.6561 5 9 1 56.04 1.23 1.6409 5 7 2 56.09 2.04 1.6396 3 8 2 56.78 7.24 1.6214 9 0 2 57.03 2.71 1.6147 9 1 2 57.25 17.66 1.6091 9 6 1 57.48 2.98 1.6034 8 8 0 57.85 13.16 1.5940 2 11 0 58.23 1.57 1.5845 4 10 1 58.54 18.54 1.5768 0 5 3 58.77 11.49 1.5711 1 5 3 60.01 6.62 1.5417 12 0 0 60.31 2.10 1.5347 5 10 1 60.39 3.43 1.5328 3 9 2 60.80 1.29 1.5235 9 4 2 61.50 28.03 1.5078 1 6 3 61.60 1.66 1.5056 6 2 3 61.64 23.81 1.5046 10 6 1 62.04 1.21 1.4960 10 7 0 62.18 8.47 1.4930 2 6 3 62.35 2.13 1.4893 6 8 2 62.63 21.52 1.4833 0 12 0 63.69 1.78 1.4612 11 5 1 63.89 1.72 1.4571 2 10 2 64.21 1.34 1.4505 5 5 3 64.41 3.70 1.4464 0 7 3 64.50 1.12 1.4447 7 2 3 65.05 2.44 1.4339 10 4 2 65.10 8.85 1.4328 6 11 0 65.23 1.98 1.4302 7 8 2 65.69 1.15 1.4215 7 3 3 65.86 15.70 1.4181 11 0 2 66.10 7.47 1.4137 11 1 2 66.30 23.12 1.4099 11 6 1 66.81 1.70 1.4003 5 6 3 67.96 1.37 1.3793 11 3 2 68.69 4.36 1.3664 12 5 1 68.91 1.25 1.3627 8 10 1 69.17 8.47 1.3582 6 6 3 69.41 4.03 1.3541 7 5 3 69.88 9.10 1.3461 3 11 2 71.01 7.86 1.3273 12 1 2 71.21 13.52 1.3242 12 6 1 71.35 1.53 1.3219 1 13 1 71.61 3.00 1.3178 14 1 0 71.74 5.42 1.3157 1 0 4 71.83 1.98 1.3142 0 9 3 71.91 2.81 1.3129 7 6 3 71.97 2.98 1.3121 1 1 4 72.56 1.51 1.3027 8 5 3 72.82 3.78 1.2988 12 3 2 73.24 2.71 1.2925 5 11 2 73.41 1.62 1.2898 3 0 4 73.71 1.22 1.2854 3 9 3 73.77 2.09 1.2845 1 3 4 73.94 3.26 1.2818 13 5 1 74.03 13.96 1.2805 2 12 2 74.86 5.82 1.2684 4 0 4 75.07 5.83 1.2654 3 12 2 75.15 1.36 1.2642 4 9 3 75.32 1.25 1.2618 10 2 3 75.33 1.17 1.2617 1 4 4 75.88 1.76 1.2539 9 9 2 76.26 1.20 1.2486 8 12 0 76.90 1.09 1.2398 2 10 3 76.93 1.01 1.2394 5 1 4 77.92 1.63 1.2261 3 10 3 78.34 2.63 1.2206 5 12 2 78.54 1.02 1.2180 10 11 0 78.69 1.13 1.2160 5 3 4 80.22 2.49 1.1967 5 4 4 81.20 4.83 1.1846 8 11 2 82.23 1.12 1.1724 5 14 1 82.34 1.62 1.1711 10 6 3 83.63 1.70 1.1562 16 0 0 84.58 2.75 1.1457 8 0 4 84.61 6.95 1.1454 9 11 2 88.02 1.33 1.1095 8 4 4 89.12 1.66 1.0987 14 9 0 89.56 4.12 1.0944 9 12 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.