Conichalcite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R070447 Qurashi M M, Barnes W H The Canadian Mineralogist 7 (1963) 561-577 The structures of the minerals of the descloizite and adelite groups: IV - descloizite and conichalcite (part 2) The structure of conichalcite CELL PARAMETERS: 7.3710 5.8070 9.1940 90.000 90.000 90.000 SPACE GROUP: P2_12_12_1 ATOM X Y Z OCCUPANCY ISO(B) Ca 0.11600 0.26900 0.42500 1.000 0.200 Cu 0.00000 0.00000 0.75000 1.000 0.950 As 0.36800 -0.23300 0.58000 1.000 0.740 O 0.18700 -0.25600 0.70000 1.000 1.000 O 0.53800 -0.17600 0.69400 1.000 1.000 O 0.37800 0.50900 0.48900 1.000 1.000 O 0.36800 -0.01600 0.47400 1.000 1.000 OH 0.15100 0.25000 0.68000 1.000 1.000 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 0.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 6 +/- 5 +/- 8 MAX. ABS. INTENSITY / VOLUME**2: 24.12996314 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 15.41 28.05 5.7510 1 0 1 18.07 24.51 4.9097 0 1 1 21.75 42.60 4.0862 1 1 1 22.80 15.73 3.9006 1 0 2 24.15 20.28 3.6855 2 0 0 24.70 1.52 3.6043 0 1 2 26.05 20.64 3.4209 2 0 1 27.55 13.82 3.2379 1 1 2 28.69 90.16 3.1117 2 1 0 30.79 9.22 2.9035 0 2 0 31.10 24.21 2.8755 2 0 2 31.62 100.00 2.8298 1 0 3 33.16 1.37 2.7015 1 2 0 34.61 84.60 2.5919 1 2 1 34.82 40.09 2.5769 2 1 2 35.28 46.36 2.5438 1 1 3 36.61 16.53 2.4548 0 2 2 37.90 13.09 2.3737 3 0 1 38.19 9.71 2.3564 2 0 3 38.66 12.44 2.3291 1 2 2 39.19 3.97 2.2985 0 0 4 39.51 15.44 2.2807 2 2 0 40.76 1.25 2.2136 2 2 1 41.08 2.12 2.1972 3 1 1 44.34 20.75 2.0431 2 2 2 44.63 2.72 2.0302 3 1 2 44.72 1.78 2.0265 1 2 3 46.57 7.30 1.9503 2 0 4 47.43 1.10 1.9170 3 0 3 49.29 6.64 1.8488 2 1 4 49.46 4.30 1.8427 4 0 0 49.61 8.58 1.8377 3 2 1 49.70 6.38 1.8345 1 3 1 50.11 19.27 1.8204 3 1 3 50.65 21.25 1.8022 0 2 4 51.21 2.13 1.7840 0 3 2 52.80 1.31 1.7339 1 3 2 53.08 1.38 1.7252 4 1 1 53.47 11.65 1.7137 2 3 0 53.58 24.46 1.7104 4 0 2 53.75 6.91 1.7054 1 1 5 55.88 1.19 1.6454 2 0 5 56.87 8.13 1.6190 2 2 4 57.12 2.59 1.6125 3 1 4 57.38 5.13 1.6057 2 3 2 57.62 44.70 1.5998 3 2 3 57.70 9.35 1.5977 1 3 3 59.40 18.06 1.5559 4 2 0 60.41 6.61 1.5323 0 0 6 60.95 21.92 1.5201 1 2 5 61.85 1.42 1.5001 3 3 1 63.08 1.02 1.4737 4 2 2 63.16 7.83 1.4722 3 0 5 63.96 6.24 1.4556 5 0 1 64.15 12.81 1.4518 0 4 0 64.56 1.29 1.4436 3 3 2 64.85 4.34 1.4377 4 0 4 65.17 5.69 1.4315 2 2 5 65.40 3.12 1.4270 3 1 5 66.03 1.95 1.4149 2 0 6 66.19 1.85 1.4119 5 1 1 66.42 2.77 1.4076 1 4 1 66.62 1.42 1.4038 5 0 2 68.22 10.50 1.3747 2 1 6 68.27 2.60 1.3739 2 3 4 68.94 5.72 1.3621 3 3 3 69.03 1.08 1.3606 1 4 2 69.34 1.00 1.3552 0 2 6 70.46 1.63 1.3364 2 4 1 71.98 2.54 1.3119 1 3 5 73.01 3.20 1.2959 2 4 2 73.07 4.44 1.2950 5 1 3 73.29 13.44 1.2917 1 4 3 74.62 2.61 1.2719 2 2 6 74.74 1.31 1.2701 4 1 5 75.18 2.17 1.2638 5 2 2 76.99 4.29 1.2385 3 4 1 77.74 1.16 1.2285 6 0 0 79.31 10.27 1.2080 5 2 3 79.80 5.13 1.2019 6 1 0 81.02 1.29 1.1869 6 0 2 81.48 3.27 1.1812 1 2 7 82.28 1.73 1.1718 3 3 5 82.90 3.08 1.1645 2 4 4 83.05 1.06 1.1628 6 1 2 83.45 3.48 1.1583 3 0 7 84.17 2.54 1.1502 5 0 5 84.89 5.15 1.1423 2 3 6 85.07 1.24 1.1404 4 4 0 85.25 1.32 1.1384 1 5 1 86.20 1.43 1.1283 5 1 5 88.21 2.67 1.1077 2 5 0 88.30 7.05 1.1068 4 4 2 89.13 1.23 1.0986 6 2 2 89.47 2.64 1.0953 5 3 3 89.84 12.88 1.0917 4 2 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.