Euclase Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R050032 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: 4.7792 14.3318 4.6316 90.000 100.290 90.000 SPACE GROUP: P2_1/a ATOM X Y Z OCCUPANCY ISO(B) Si 0.17752 0.10027 0.53639 1.000 0.390 Al 0.24877 0.44470 0.95708 1.000 0.450 Be 0.17410 0.30060 0.45710 1.000 0.600 O 0.38180 0.03240 0.76300 1.000 0.520 O 0.38000 0.37700 0.65210 1.000 0.500 O 0.34310 0.19980 0.52480 1.000 0.530 O 0.10060 0.05310 0.21130 1.000 0.500 O 0.15960 0.33200 0.12060 1.000 0.710 H 0.06300 0.30200 0.01100 1.000 2.400 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 4 +/- 13 +/- 4 MAX. ABS. INTENSITY / VOLUME**2: 9.081836068 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 12.35 100.00 7.1659 0 2 0 19.48 10.80 4.5571 0 0 1 19.87 8.80 4.4680 1 1 0 20.45 1.42 4.3428 0 1 1 23.13 36.91 3.8454 0 2 1 24.85 8.77 3.5830 0 4 0 25.44 6.11 3.5013 -1 1 1 27.04 11.10 3.2974 0 3 1 27.66 54.00 3.2245 -1 2 1 30.30 4.67 2.9499 1 1 1 31.05 5.19 2.8805 -1 3 1 31.39 2.62 2.8499 1 4 0 31.77 15.13 2.8166 0 4 1 32.22 52.14 2.7786 1 2 1 35.29 29.48 2.5433 -1 4 1 36.72 30.28 2.4475 1 5 0 37.66 1.42 2.3886 0 6 0 38.28 17.04 2.3512 2 0 0 39.55 7.05 2.2786 0 0 2 39.88 13.08 2.2605 -2 0 1 40.07 10.14 2.2503 0 1 2 40.37 1.14 2.2340 2 2 0 40.40 1.56 2.2329 -2 1 1 41.31 2.40 2.1855 -1 1 2 41.59 2.85 2.1714 0 2 2 42.74 1.68 2.1156 0 6 1 42.87 3.05 2.1095 2 3 0 43.57 12.99 2.0772 1 5 1 44.03 1.51 2.0566 0 3 2 44.33 7.21 2.0433 -2 3 1 45.18 6.77 2.0068 -1 3 2 45.53 19.24 1.9922 -1 6 1 46.52 9.22 1.9522 2 0 1 46.97 1.25 1.9343 2 1 1 47.28 2.35 1.9227 0 4 2 48.32 7.31 1.8835 2 2 1 48.37 14.34 1.8818 -1 4 2 48.76 1.33 1.8676 0 7 1 49.12 1.71 1.8549 1 2 2 50.56 4.34 1.8053 -2 0 2 50.98 4.20 1.7915 0 8 0 51.22 4.53 1.7837 0 5 2 51.30 1.85 1.7810 -1 7 1 51.49 3.02 1.7749 -2 5 1 52.25 2.02 1.7509 -1 5 2 54.32 1.40 1.6888 -2 3 2 54.78 1.23 1.6756 2 6 0 54.84 4.36 1.6741 1 8 0 55.08 4.78 1.6673 0 8 1 55.76 2.24 1.6487 0 6 2 56.73 5.33 1.6227 -1 6 2 59.16 2.06 1.5617 -3 1 1 60.08 2.07 1.5400 1 8 1 60.62 1.53 1.5276 -2 5 2 61.06 2.40 1.5175 -2 7 1 61.53 5.38 1.5072 2 0 2 61.75 1.26 1.5024 -1 7 2 62.01 7.68 1.4966 1 6 2 63.02 2.05 1.4749 2 2 2 64.35 3.26 1.4476 0 3 3 64.72 1.27 1.4402 -2 6 2 64.80 5.82 1.4388 -3 4 1 64.87 2.30 1.4374 2 3 2 64.94 3.86 1.4360 3 4 0 65.50 1.56 1.4250 2 8 0 66.14 1.73 1.4129 2 7 1 66.38 1.01 1.4083 0 8 2 66.40 2.68 1.4079 -3 1 2 66.55 1.01 1.4051 -1 4 3 66.79 3.52 1.4006 1 7 2 66.81 1.20 1.4002 3 1 1 67.26 2.98 1.3920 -1 8 2 67.48 1.68 1.3879 -2 1 3 67.89 3.31 1.3806 3 2 1 68.05 6.42 1.3777 -3 5 1 68.19 7.78 1.3752 3 5 0 68.56 5.58 1.3688 -2 2 3 68.65 11.79 1.3672 0 10 1 69.41 2.13 1.3541 -2 7 2 69.60 7.22 1.3507 1 2 3 70.11 1.01 1.3422 0 5 3 70.33 6.40 1.3386 -2 3 3 71.36 3.67 1.3217 1 3 3 71.47 1.84 1.3199 2 8 1 71.56 1.13 1.3185 2 9 0 71.94 1.97 1.3126 -3 6 1 72.07 5.63 1.3105 3 6 0 72.10 4.52 1.3099 1 8 2 72.13 1.00 1.3096 3 4 1 73.79 4.07 1.2840 1 4 3 74.84 2.99 1.2687 -3 5 2 75.24 1.39 1.2630 3 5 1 75.96 1.18 1.2527 0 11 1 77.96 1.02 1.2255 -1 11 1 78.91 1.56 1.2132 0 10 2 79.12 1.17 1.2104 -2 10 1 80.68 1.38 1.1909 -4 0 1 83.52 2.47 1.1576 1 12 0 83.72 5.15 1.1553 2 10 1 83.89 1.48 1.1533 2 8 2 84.03 1.85 1.1517 -1 1 4 85.03 1.01 1.1407 -1 2 4 87.28 1.08 1.1171 3 9 0 87.34 1.42 1.1164 -4 2 2 88.01 1.07 1.1097 -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.