Labradorite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060193 Wenk H R, Joswig W, Tagai T, Korekawa M, Smith B K American Mineralogist 65 (1980) 81-95 The average structure of An 62-66 labradorite Surtsey x-ray feldspar CELL PARAMETERS: 8.173600 12.87360 7.102200 93.46200 116.0540 90.47500 SPACE GROUP: C-1 X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 13.75 8.51 6.4777 -1 1 0 15.28 1.46 5.8272 -1 -1 1 18.99 8.02 4.6912 0 -2 1 22.05 78.58 4.0448 -2 0 1 22.85 17.17 3.9031 1 -1 1 23.73 40.45 3.7602 -1 3 0 23.72 25.87 3.7622 1 1 1 24.51 34.90 3.6414 1 3 0 24.61 13.52 3.6267 -1 -3 1 25.52 1.37 3.4992 -1 3 1 25.70 13.34 3.4749 -1 -1 2 26.05 5.14 3.4293 -2 -2 1 26.53 25.43 3.3683 -1 1 2 27.60 54.38 3.2389 -2 2 0 27.84 59.79 3.2122 0 4 0 27.90 95.41 3.2053 -2 0 2 28.09 100.00 3.1843 0 0 2 28.51 43.09 3.1376 2 2 0 29.57 23.64 3.0276 1 -3 1 30.33 27.07 2.9529 0 -4 1 30.50 17.62 2.9366 0 -2 2 30.75 10.77 2.9136 -2 -2 2 31.58 24.50 2.8385 1 3 1 31.82 8.69 2.8178 -1 -3 2 33.83 14.60 2.6544 -1 3 2 35.31 3.29 2.5458 2 -2 1 35.60 5.13 2.5257 1 -1 2 35.67 4.08 2.5212 -3 -1 2 35.68 30.50 2.5205 -2 -4 1 35.83 20.11 2.5104 -2 4 1 35.92 1.49 2.5038 -3 1 2 36.54 2.22 2.4627 -2 4 0 36.83 3.62 2.4439 2 2 1 37.20 4.28 2.4203 -3 1 0 37.24 4.74 2.4178 -1 -5 1 37.73 3.24 2.3877 3 1 0 37.95 3.74 2.3743 2 4 0 38.29 3.31 2.3540 -1 5 1 39.07 5.89 2.3083 -3 3 1 39.48 6.39 2.2857 -3 -3 1 39.78 3.17 2.2689 -1 1 3 40.05 1.73 2.2543 1 -3 2 40.49 4.47 2.2305 1 -5 1 40.57 2.55 2.2262 -2 4 2 41.36 1.64 2.1858 0 4 2 41.89 1.47 2.1592 -3 3 0 41.87 2.34 2.1602 -2 2 3 42.20 1.17 2.1440 -1 -5 2 42.25 9.72 2.1415 0 6 0 42.49 13.69 2.1300 2 -4 1 43.05 8.99 2.1033 1 5 1 43.24 1.93 2.0948 -3 1 3 43.30 1.46 2.0917 3 3 0 44.83 1.30 2.0238 -1 5 2 44.86 2.55 2.0224 -4 0 2 45.01 3.40 2.0160 -4 0 1 45.24 1.04 2.0066 2 0 2 45.42 1.74 1.9989 3 -1 1 45.54 2.22 1.9941 -1 3 3 45.68 4.78 1.9879 0 6 1 46.19 1.73 1.9672 3 1 1 46.58 3.14 1.9515 2 -2 2 46.82 1.07 1.9424 -3 -3 3 47.10 3.32 1.9314 -4 -2 2 47.22 10.29 1.9268 -4 2 2 48.46 5.17 1.8801 -2 6 0 48.43 7.76 1.8811 2 2 2 48.50 1.12 1.8786 -3 5 1 49.16 1.47 1.8550 3 -3 1 49.31 11.22 1.8498 -4 0 3 49.48 1.22 1.8437 -2 4 3 49.64 3.58 1.8380 0 -6 2 49.72 14.36 1.8353 4 0 0 49.75 2.91 1.8343 1 -1 3 49.83 2.50 1.8314 0 -4 3 50.15 5.16 1.8207 2 6 0 50.36 3.45 1.8134 -2 -6 2 50.80 9.17 1.7987 1 1 3 50.87 2.51 1.7964 -1 7 0 51.28 1.15 1.7830 -1 -7 1 51.32 1.17 1.7817 3 3 1 51.55 23.40 1.7742 -2 0 4 52.21 6.01 1.7535 2 -4 2 52.33 1.88 1.7496 -2 6 2 52.42 1.51 1.7468 -1 7 1 52.39 1.45 1.7477 4 2 0 52.40 1.61 1.7474 1 5 2 52.72 3.33 1.7375 -2 -2 4 52.94 1.35 1.7309 1 -3 3 53.04 1.17 1.7278 2 -6 1 53.24 3.33 1.7217 -4 4 1 53.24 3.03 1.7217 0 6 2 53.42 2.08 1.7163 0 4 3 53.48 6.13 1.7146 -4 -4 2 53.69 3.61 1.7083 -4 4 2 54.19 1.78 1.6938 -4 -4 1 54.52 3.94 1.6842 -2 2 4 54.84 1.44 1.6752 -3 -5 3 55.58 3.50 1.6545 2 4 2 56.27 1.13 1.6358 -1 -3 4 56.45 1.50 1.6312 -3 -3 4 56.74 1.60 1.6235 3 -5 1 56.87 1.25 1.6201 -4 -4 3 57.15 4.25 1.6126 -3 5 3 57.41 2.32 1.6061 0 8 0 58.16 1.19 1.5870 4 0 1 58.24 1.61 1.5850 -5 1 1 58.28 1.39 1.5840 0 -8 1 58.79 2.38 1.5715 0 -2 4 58.88 1.72 1.5693 -4 -2 4 59.67 1.31 1.5504 3 -3 2 60.00 1.35 1.5427 2 -2 3 59.99 3.20 1.5429 3 5 1 60.07 2.17 1.5410 -4 2 4 60.15 1.17 1.5391 1 -7 2 60.74 1.08 1.5256 -5 -3 2 60.96 1.19 1.5206 0 2 4 61.26 1.65 1.5138 2 -6 2 61.22 1.95 1.5146 -2 4 4 62.12 5.34 1.4948 -2 -8 1 62.27 5.90 1.4917 -2 8 0 62.37 1.26 1.4894 3 3 2 62.57 4.11 1.4852 -5 -3 3 62.75 5.70 1.4814 -4 6 1 62.72 1.14 1.4821 -5 -3 1 62.98 1.54 1.4765 0 -8 2 63.15 2.47 1.4730 -5 3 3 63.13 1.01 1.4734 -4 -6 2 63.42 4.15 1.4673 -4 6 2 63.91 6.12 1.4572 0 6 3 64.17 3.76 1.4519 2 8 0 64.55 3.68 1.4443 2 -4 3 64.61 1.02 1.4430 3 7 0 65.34 2.09 1.4288 -5 1 4 65.81 1.44 1.4196 -4 6 0 65.80 1.02 1.4198 -3 -7 3 65.83 3.92 1.4192 2 6 2 65.95 1.58 1.4170 2 -8 1 66.26 1.76 1.4110 1 1 4 67.08 2.54 1.3957 4 4 1 67.29 3.59 1.3918 1 9 0 67.58 5.82 1.3867 1 -3 4 67.76 2.89 1.3834 -4 6 3 68.04 3.87 1.3783 -5 -3 4 68.32 3.27 1.3734 1 -9 1 68.32 1.18 1.3734 5 3 0 68.54 2.72 1.3694 2 4 3 68.58 2.24 1.3688 4 6 0 68.72 4.14 1.3663 -4 0 5 69.04 7.25 1.3607 -6 0 2 69.51 6.98 1.3527 4 0 2 69.48 5.06 1.3532 -1 -9 2 69.69 2.07 1.3497 -4 -2 5 69.81 1.93 1.3477 2 8 1 70.09 3.33 1.3430 -1 1 5 70.32 1.20 1.3391 4 -2 2 70.51 1.89 1.3359 -5 5 3 70.98 1.46 1.3282 -6 -2 2 71.08 1.63 1.3266 0 -8 3 71.29 1.28 1.3231 0 -6 4 71.32 2.85 1.3227 -1 -3 5 71.38 1.24 1.3218 3 1 3 71.59 1.13 1.3184 -6 2 3 72.27 1.09 1.3076 -4 -6 4 72.93 1.78 1.2975 -1 9 2 73.06 3.21 1.2954 2 -8 2 74.02 1.05 1.2810 -6 0 4 74.57 1.20 1.2729 4 -4 2 74.77 1.40 1.2699 -3 9 1 74.75 1.60 1.2703 2 0 4 74.94 1.35 1.2675 -4 8 1 75.00 1.08 1.2665 0 -2 5 75.44 4.15 1.2603 -4 -8 2 75.61 2.21 1.2579 -6 4 2 75.80 3.34 1.2552 -4 8 2 76.53 2.48 1.2450 -6 -4 3 76.78 1.48 1.2416 -5 -3 5 76.93 1.07 1.2395 0 8 3 77.19 2.05 1.2360 -4 4 5 77.88 1.04 1.2268 -6 4 1 78.13 3.84 1.2235 6 0 0 78.24 1.34 1.2219 4 4 2 78.68 4.38 1.2162 2 8 2 79.16 1.99 1.2100 -3 5 5 80.45 1.27 1.1938 6 2 0 81.78 1.20 1.1778 -4 -6 5 82.52 1.58 1.1691 1 -7 4 82.48 1.15 1.1695 -1 5 5 82.75 2.06 1.1664 -3 9 3 83.51 2.75 1.1577 -6 4 0 83.62 2.36 1.1564 3 5 3 84.24 1.35 1.1495 -5 -7 4 84.60 2.32 1.1454 -2 6 5 85.36 1.36 1.1372 -1 -9 4 86.03 1.46 1.1301 -1 -11 2 86.07 2.18 1.1296 6 4 0 86.14 1.46 1.1289 -3 -9 4 89.44 1.02 1.0956 -2 -8 5 89.44 1.02 1.0956 -2 -8 5 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.