Euclase Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050623 Hazen R M, Au A Y, Finger L W American Mineralogist 71 (1986) 977-984 High-pressure crystal chemistry of beryl (Be3Al2Si6O18) and euclase (BeAlSiO4OH) Sample: Pressure = .001 kbar CELL PARAMETERS: 4.778954 14.33101 4.632345 90.00000 100.3015 90.00000 SPACE GROUP: P2_1/a X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 12.38 100.00 7.1655 0 2 0 19.49 10.82 4.5577 0 0 1 19.89 8.82 4.4676 1 1 0 20.46 1.42 4.3433 0 1 1 23.14 36.98 3.8457 0 2 1 24.86 8.76 3.5828 0 4 0 25.45 6.12 3.5017 -1 1 1 27.05 11.12 3.2976 0 3 1 27.67 54.12 3.2248 -1 2 1 30.31 4.68 2.9497 1 1 1 31.05 5.20 2.8807 -1 3 1 31.40 2.62 2.8497 1 4 0 31.78 15.14 2.8167 0 4 1 32.22 52.21 2.7784 1 2 1 35.29 29.52 2.5434 -1 4 1 36.72 30.27 2.4473 1 5 0 37.66 1.42 2.3885 0 6 0 38.29 17.07 2.3510 2 0 0 39.55 7.07 2.2788 0 0 2 39.88 13.12 2.2606 -2 0 1 40.06 10.17 2.2506 0 1 2 40.38 1.14 2.2338 2 2 0 40.39 1.56 2.2329 -2 1 1 41.30 2.40 2.1859 -1 1 2 41.58 2.86 2.1717 0 2 2 42.74 1.68 2.1156 0 6 1 42.87 3.05 2.1094 2 3 0 43.57 12.99 2.0771 1 5 1 44.02 1.52 2.0568 0 3 2 44.33 7.22 2.0433 -2 3 1 45.17 6.79 2.0071 -1 3 2 45.53 19.25 1.9922 -1 6 1 46.52 9.24 1.9520 2 0 1 46.97 1.25 1.9341 2 1 1 47.26 2.36 1.9228 0 4 2 48.32 7.32 1.8834 2 2 1 48.35 14.37 1.8820 -1 4 2 48.75 1.33 1.8675 0 7 1 49.11 1.71 1.8549 1 2 2 50.54 4.36 1.8056 -2 0 2 50.97 4.20 1.7914 0 8 0 51.20 4.53 1.7838 0 5 2 51.29 1.85 1.7810 -1 7 1 51.47 3.02 1.7749 -2 5 1 52.23 2.03 1.7510 -1 5 2 54.30 1.41 1.6890 -2 3 2 54.77 1.23 1.6755 2 6 0 54.83 4.36 1.6740 1 8 0 55.07 4.78 1.6672 0 8 1 55.74 2.25 1.6488 0 6 2 56.71 5.34 1.6228 -1 6 2 59.14 2.07 1.5617 -3 1 1 60.06 2.07 1.5400 1 8 1 60.59 1.53 1.5277 -2 5 2 61.04 2.40 1.5175 -2 7 1 61.51 5.39 1.5071 2 0 2 61.72 1.27 1.5024 -1 7 2 61.99 7.68 1.4966 1 6 2 63.00 2.05 1.4749 2 2 2 64.32 3.26 1.4478 0 3 3 64.69 1.27 1.4403 -2 6 2 64.77 5.83 1.4388 -3 4 1 64.85 2.30 1.4373 2 3 2 64.92 3.87 1.4359 3 4 0 65.48 1.56 1.4249 2 8 0 66.12 1.73 1.4128 2 7 1 66.36 2.68 1.4081 -3 1 2 66.35 1.01 1.4083 0 8 2 66.51 1.01 1.4053 -1 4 3 66.76 3.52 1.4006 1 7 2 66.79 1.20 1.4000 3 1 1 67.23 2.99 1.3921 -1 8 2 67.44 1.69 1.3882 -2 1 3 67.87 3.32 1.3804 3 2 1 68.02 6.44 1.3777 -3 5 1 68.17 7.79 1.3751 3 5 0 68.51 5.60 1.3690 -2 2 3 68.62 11.78 1.3671 0 10 1 69.37 2.13 1.3542 -2 7 2 69.57 7.23 1.3508 1 2 3 70.07 1.01 1.3423 0 5 3 70.28 6.42 1.3388 -2 3 3 71.32 3.68 1.3218 1 3 3 71.45 1.84 1.3198 2 8 1 71.54 1.13 1.3184 2 9 0 71.90 1.98 1.3126 -3 6 1 72.04 5.63 1.3104 3 6 0 72.07 4.52 1.3099 1 8 2 72.10 1.01 1.3094 3 4 1 73.75 4.08 1.2841 1 4 3 74.80 3.00 1.2687 -3 5 2 75.21 1.39 1.2629 3 5 1 75.93 1.18 1.2526 0 11 1 77.92 1.02 1.2255 -1 11 1 78.87 1.56 1.2132 0 10 2 79.08 1.17 1.2104 -2 10 1 80.64 1.39 1.1909 -4 0 1 83.47 2.47 1.1575 1 12 0 83.67 5.15 1.1552 2 10 1 83.85 1.48 1.1533 2 8 2 83.96 1.85 1.1519 -1 1 4 84.96 1.02 1.1409 -1 2 4 87.23 1.08 1.1170 3 9 0 87.28 1.43 1.1165 -4 2 2 87.94 1.08 1.1098 -3 5 3 87.94 1.08 1.1098 -3 5 3 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.