Lazulite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R050110 Giuseppetti G, Tadini C Neues Jahrbuch fur Mineralogie, Monatshefte 1983 (1983) 410-416 Lazulite, (Mg,Fe)Al2(OH)2(PO4)2: structure refinement and hydrogen bonding Locality: Graves Mountain, Lincoln County, Georgia, USA CELL PARAMETERS: 7.1451 7.2767 7.2294 90.000 120.522 90.000 SPACE GROUP: P2_1/c ATOM X Y Z OCCUPANCY ISO(B) Mg 0.00000 0.00000 0.00000 0.866 0.490 Fe 0.00000 0.00000 0.00000 0.134 0.490 Al -0.26740 0.26680 0.00640 1.000 0.370 P 0.24800 0.38540 0.24500 1.000 0.340 O -0.21250 0.01420 0.10600 1.000 0.610 O -0.28810 0.49980 -0.09300 1.000 0.680 O 0.04360 0.26410 0.12450 1.000 0.620 O -0.56190 0.24270 -0.12920 1.000 0.660 O -0.25990 0.14670 -0.24120 1.000 0.510 H -0.36200 0.42500 0.20900 1.000 0.510 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 5 +/- 6 +/- 5 MAX. ABS. INTENSITY / VOLUME**2: 11.54947330 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 14.39 6.53 6.1550 1 0 0 18.73 8.88 4.7369 -1 1 1 18.75 6.24 4.7314 0 1 1 18.88 7.11 4.6994 1 1 0 24.47 1.93 3.6384 0 2 0 24.63 2.33 3.6147 -1 0 2 27.55 100.00 3.2373 -1 1 2 27.82 4.49 3.2066 -2 1 1 27.87 60.73 3.2015 1 1 1 28.41 53.28 3.1415 0 2 1 28.50 6.00 3.1321 1 2 0 28.61 11.94 3.1201 -2 0 2 29.01 39.92 3.0775 2 0 0 34.99 4.32 2.5643 -1 2 2 35.21 24.88 2.5490 -2 2 1 38.31 1.34 2.3497 2 2 0 38.37 1.58 2.3459 -3 0 2 38.46 1.04 2.3406 1 0 2 39.89 4.35 2.2602 0 3 1 39.95 6.90 2.2567 1 3 0 40.07 4.42 2.2500 -2 1 3 40.40 1.96 2.2328 -3 1 2 40.62 3.92 2.2209 -3 1 1 40.68 3.49 2.2181 2 1 1 44.14 2.80 2.0517 3 0 0 45.01 6.15 2.0141 -1 3 2 45.22 7.50 2.0054 1 3 1 45.35 4.04 1.9999 -3 1 3 45.74 12.61 1.9834 -2 2 3 45.96 9.64 1.9747 3 1 0 46.29 6.76 1.9615 2 2 1 50.15 5.70 1.8192 0 4 0 50.50 8.22 1.8073 -2 0 4 50.63 6.96 1.8030 0 2 3 51.14 4.63 1.7860 -4 0 2 52.75 1.84 1.7352 -3 0 4 54.18 1.30 1.6929 -1 3 3 54.42 1.81 1.6859 -1 1 4 54.48 1.06 1.6843 1 3 2 54.84 2.02 1.6740 1 1 3 55.25 2.08 1.6627 3 1 1 56.88 13.63 1.6186 -2 2 4 57.58 9.67 1.6008 2 2 2 58.45 5.47 1.5790 -3 3 3 58.75 6.43 1.5716 -2 4 2 58.79 17.99 1.5708 0 4 2 58.96 9.41 1.5665 3 3 0 58.98 1.81 1.5660 2 4 0 59.04 1.49 1.5646 -1 2 4 59.23 5.91 1.5600 -4 0 4 59.31 3.13 1.5580 -4 2 3 59.36 1.59 1.5569 0 0 4 59.77 4.14 1.5473 -4 2 1 60.13 11.57 1.5388 4 0 0 64.86 1.31 1.4376 -3 4 2 65.90 1.06 1.4173 -1 5 1 66.28 4.64 1.4101 -1 3 4 66.33 3.37 1.4092 -3 1 5 66.65 2.01 1.4031 1 3 3 67.32 1.60 1.3909 -5 1 2 67.44 3.53 1.3886 3 1 2 69.65 2.81 1.3500 -1 5 2 70.52 2.45 1.3354 -2 2 5 70.56 1.36 1.3347 -5 1 4 71.34 2.39 1.3220 2 2 3 74.22 2.07 1.2777 -4 2 5 74.44 15.19 1.2745 -4 4 2 74.53 4.00 1.2732 2 4 2 74.61 1.50 1.2720 -5 2 4 75.43 1.63 1.2602 4 2 1 76.91 1.03 1.2396 -2 5 3 80.56 2.44 1.1924 -3 5 3 81.00 1.78 1.1870 3 5 0 81.19 3.37 1.1847 -5 3 4 81.35 1.30 1.1829 0 4 4 81.36 2.85 1.1827 1 3 4 81.72 1.35 1.1784 0 2 5 82.41 1.00 1.1703 2 0 4 87.57 4.09 1.1141 2 2 4 87.87 2.86 1.1110 1 5 3 89.71 1.94 1.0930 5 1 1 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.