Poudretteite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R080009 Grice J D, Ercit T S, Van Velthuizen J, Dunn P J The Canadian Mineralogist 25 (1987) 763-766 Poudretteite, KNa2B3Si12O30, a new member of the osumilite group from Mont Saint-Hilaire, Quebec, and its crystal structure Locality: Mont Saint-Hilaire, Quebec, Canada CELL PARAMETERS: 10.2400 10.2400 13.4900 90.000 90.000 120.000 SPACE GROUP: P6/mcc ATOM X Y Z OCCUPANCY ISO(B) K 0.00000 0.00000 0.25000 1.000 1.403 Na 0.33333 0.66667 0.25000 1.000 1.173 B 0.00000 0.50000 0.25000 1.000 0.630 Si 0.06950 2.33761 0.11333 1.000 0.509 O 0.08210 0.39210 0.00000 1.000 1.118 O 0.18920 0.28200 0.13330 1.000 1.048 O 0.10040 0.47100 0.18730 1.000 0.729 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 8 +/- 8 +/- 12 MAX. ABS. INTENSITY / VOLUME**2: 10.31017876 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 9.97 12.20 8.8681 1 0 0 13.13 24.75 6.7450 0 0 2 16.51 2.80 5.3686 1 0 2 17.32 100.00 5.1200 1 1 0 20.03 4.03 4.4341 2 0 0 21.79 30.46 4.0782 1 1 2 24.02 22.10 3.7052 2 0 2 26.43 25.23 3.3725 0 0 4 27.42 86.54 3.2529 2 1 1 28.31 12.09 3.1522 1 0 4 30.23 31.05 2.9560 3 0 0 31.77 52.14 2.8164 1 1 4 33.34 11.74 2.6874 2 1 3 33.38 33.06 2.6843 2 0 4 35.05 3.31 2.5600 2 2 0 36.53 9.00 2.4596 3 1 0 37.16 7.76 2.4197 3 1 1 37.58 7.07 2.3934 2 2 2 37.84 2.46 2.3774 2 1 4 41.86 2.86 2.1579 3 1 3 43.99 2.51 2.0586 1 1 6 45.07 9.82 2.0117 3 2 1 45.65 7.10 1.9872 3 1 4 46.63 1.08 1.9478 3 2 2 46.95 3.21 1.9352 4 1 0 47.46 1.64 1.9156 4 1 1 48.97 8.64 1.8601 4 1 2 49.15 3.24 1.8536 3 2 3 50.19 15.24 1.8176 3 1 5 51.04 4.10 1.7895 3 0 6 51.53 8.87 1.7736 5 0 0 54.30 2.66 1.6893 2 2 6 54.41 5.75 1.6862 0 0 8 54.68 7.41 1.6785 4 1 4 54.77 1.07 1.6759 4 2 0 55.23 11.78 1.6631 4 2 1 55.47 2.38 1.6566 1 0 8 57.55 1.36 1.6016 1 1 8 58.46 1.74 1.5786 4 0 6 58.57 3.70 1.5761 2 0 8 58.71 3.20 1.5725 4 1 5 58.80 2.51 1.5704 4 2 3 58.83 4.93 1.5698 5 0 4 60.83 1.28 1.5228 3 3 4 63.52 6.59 1.4647 3 0 8 64.26 1.87 1.4495 4 3 1 64.55 1.42 1.4438 6 0 2 65.50 1.09 1.4250 4 3 2 65.57 8.35 1.4236 4 2 5 65.76 4.58 1.4200 5 2 0 66.17 1.02 1.4122 5 2 1 66.38 2.10 1.4082 2 2 8 68.58 3.01 1.3683 2 1 9 68.74 2.04 1.3655 4 1 7 69.43 2.30 1.3537 6 0 4 69.51 1.85 1.3524 6 1 0 69.91 5.39 1.3456 6 1 1 72.18 2.38 1.3087 5 2 4 72.45 2.41 1.3045 1 1 10 73.06 3.28 1.2951 6 1 3 74.07 6.40 1.2799 3 1 9 74.97 1.36 1.2669 5 3 0 75.12 1.31 1.2646 4 2 7 78.02 1.79 1.2247 6 2 1 78.22 1.12 1.2221 5 0 8 79.23 7.17 1.2090 6 1 5 79.90 2.95 1.2006 5 2 6 80.21 5.02 1.1967 4 4 4 80.48 1.44 1.1934 2 2 10 80.86 2.64 1.1887 4 2 8 81.07 2.88 1.1862 6 2 3 84.04 1.37 1.1517 2 1 11 87.26 4.65 1.1172 4 2 9 88.28 1.16 1.1070 6 1 7 88.70 1.22 1.1029 4 3 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.