Glaucophane Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R070515 Comodi P, Mellini M, Ungaretti L, Zanazzi P F European Journal of Mineralogy 3 (1991) 485-499 Compressibility and high pressure structure refinement of tremolite, pargasite and glaucophane Sample: pressure at ambient conditions (.001 kbar) CELL PARAMETERS: 9.6220 17.8500 5.3036 90.000 103.590 90.000 SPACE GROUP: C2/m ATOM X Y Z OCCUPANCY ISO(B) Mg 0.00000 0.09100 0.50000 0.720 0.663 Fe 0.00000 0.09100 0.50000 0.280 0.663 Al 0.00000 0.18090 0.00000 0.800 0.545 Fe 0.00000 0.18090 0.00000 0.200 0.545 Mg 0.00000 0.00000 0.00000 0.540 0.592 Fe 0.00000 0.00000 0.00000 0.460 0.592 Na 0.00000 0.27680 0.50000 0.990 1.263 Li 0.00000 0.27680 0.50000 0.010 1.263 Si 0.28350 0.08730 0.29220 1.000 0.450 Si 0.29270 0.17300 0.80730 1.000 0.466 O 0.10880 0.09330 0.20350 1.000 0.679 O 0.11760 0.17230 0.74660 1.000 0.640 O 0.11210 0.00000 0.70670 1.000 0.774 O 0.36920 0.25270 0.80420 1.000 0.774 O 0.35520 0.13190 0.08790 1.000 0.805 O 0.34080 0.12260 0.57990 1.000 0.797 O 0.33210 0.00000 0.29930 1.000 0.845 H 0.22000 0.00000 0.76900 1.000 0.008 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 0.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 8 +/- 16 +/- 4 MAX. ABS. INTENSITY / VOLUME**2: 10.18361771 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 9.91 10.14 8.9250 0 2 0 10.68 100.00 8.2843 1 1 0 17.67 2.03 5.0202 1 3 0 18.28 20.85 4.8534 -1 1 1 18.98 1.25 4.6763 2 0 0 19.89 8.94 4.4640 0 2 1 19.90 26.27 4.4625 0 4 0 22.12 1.71 4.0178 1 1 1 23.12 16.32 3.8473 -1 3 1 24.61 3.89 3.6174 -2 2 1 26.30 23.82 3.3892 1 3 1 26.42 1.13 3.3740 0 4 1 26.73 1.61 3.3353 1 5 0 27.63 14.73 3.2284 2 4 0 29.08 56.23 3.0710 3 1 0 30.23 1.13 2.9563 -3 1 1 30.36 17.94 2.9436 2 2 1 30.68 2.41 2.9139 -1 5 1 32.42 8.93 2.7614 3 3 0 33.19 76.83 2.6990 1 5 1 33.47 8.48 2.6772 -3 3 1 34.21 1.21 2.6208 -1 1 2 34.81 3.53 2.5776 0 0 2 34.82 21.32 2.5767 0 6 1 35.60 38.92 2.5217 -2 0 2 38.33 2.14 2.3482 3 5 0 38.68 1.21 2.3276 1 1 2 39.24 22.63 2.2957 -3 5 1 39.60 5.05 2.2757 -1 7 1 39.71 7.42 2.2697 -4 2 1 40.13 16.66 2.2470 -3 1 2 41.12 3.13 2.1954 -2 4 2 41.64 5.23 2.1688 1 7 1 41.97 18.36 2.1525 2 6 1 42.49 1.02 2.1276 -1 5 2 42.72 3.12 2.1168 -3 3 2 43.91 9.77 2.0618 2 0 2 45.17 10.24 2.0071 3 5 1 45.86 4.35 1.9785 -4 0 2 45.98 2.34 1.9738 3 7 0 46.29 1.36 1.9615 1 5 2 46.77 1.54 1.9423 -3 7 1 47.42 1.99 1.9171 4 2 1 48.65 2.59 1.8717 2 4 2 48.96 2.85 1.8603 5 1 0 49.38 7.25 1.8457 -1 9 1 49.47 1.12 1.8426 -4 6 1 50.46 1.53 1.8087 -4 4 2 51.10 2.55 1.7873 1 9 1 51.17 3.40 1.7850 0 10 0 51.19 2.31 1.7844 5 3 0 53.59 5.81 1.7100 -5 1 2 54.19 2.09 1.6925 -1 3 3 54.37 3.46 1.6874 0 2 3 54.53 1.15 1.6827 -5 5 1 54.85 1.19 1.6737 -3 1 3 54.95 3.16 1.6710 -2 8 2 56.14 18.54 1.6384 4 6 1 57.06 4.51 1.6142 4 8 0 57.65 7.81 1.5988 1 11 0 58.31 15.59 1.5825 -1 5 3 59.27 3.56 1.5591 4 0 2 59.28 2.69 1.5588 6 0 0 61.17 1.78 1.5150 1 9 2 61.42 12.24 1.5095 -2 6 3 61.91 6.25 1.4989 -6 0 2 62.33 3.05 1.4897 5 5 1 62.41 1.13 1.4880 0 6 3 62.43 6.13 1.4875 0 12 0 62.70 1.39 1.4818 2 2 3 62.77 1.10 1.4804 -4 8 2 63.17 1.67 1.4718 4 4 2 63.89 3.22 1.4569 -2 10 2 64.16 2.38 1.4515 -1 7 3 64.77 3.75 1.4394 3 11 0 65.72 2.62 1.4209 -6 4 2 65.82 1.62 1.4188 4 10 0 66.34 17.57 1.4090 -6 6 1 66.55 1.01 1.4051 -5 3 3 68.79 8.20 1.3647 5 1 2 70.17 3.89 1.3413 2 6 3 70.23 3.66 1.3402 -5 5 3 70.55 6.36 1.3349 1 11 2 70.61 2.17 1.3339 5 3 2 70.71 2.17 1.3324 7 1 0 71.52 1.76 1.3191 -3 11 2 71.55 1.30 1.3187 -1 9 3 71.74 4.62 1.3157 -1 1 4 73.48 2.26 1.2888 0 0 4 73.51 2.77 1.2884 0 12 2 73.53 1.90 1.2880 -1 3 4 73.90 4.99 1.2824 -7 5 1 73.99 9.34 1.2812 -2 12 2 74.80 1.22 1.2693 6 6 1 75.39 3.59 1.2609 -4 0 4 81.61 6.65 1.1796 -5 11 2 82.11 3.10 1.1738 2 0 4 82.51 1.05 1.1691 8 0 0 88.89 1.45 1.1009 3 1 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.