Conichalcite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R070430 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: 7.3822 5.8146 9.2136 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: 24.03038742 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 15.38 27.99 5.7611 1 0 1 18.04 24.45 4.9173 0 1 1 21.72 42.52 4.0925 1 1 1 22.75 15.72 3.9082 1 0 2 24.11 20.24 3.6911 2 0 0 24.66 1.52 3.6109 0 1 2 26.01 20.61 3.4264 2 0 1 27.50 13.81 3.2436 1 1 2 28.65 90.01 3.1162 2 1 0 30.75 9.20 2.9073 0 2 0 31.05 24.19 2.8805 2 0 2 31.55 100.00 2.8356 1 0 3 33.12 1.37 2.7051 1 2 0 34.56 84.46 2.5955 1 2 1 34.76 40.06 2.5812 2 1 2 35.21 46.36 2.5487 1 1 3 36.55 16.50 2.4586 0 2 2 37.84 13.07 2.3774 3 0 1 38.12 9.72 2.3608 2 0 3 38.60 12.44 2.3327 1 2 2 39.11 3.97 2.3034 0 0 4 39.45 15.42 2.2839 2 2 0 40.70 1.25 2.2168 2 2 1 41.01 2.12 2.2006 3 1 1 44.26 20.74 2.0462 2 2 2 44.56 2.72 2.0334 3 1 2 44.64 1.78 2.0299 1 2 3 46.47 7.31 1.9541 2 0 4 47.34 1.10 1.9204 3 0 3 49.19 6.65 1.8523 2 1 4 49.38 4.30 1.8455 4 0 0 49.53 8.59 1.8404 3 2 1 49.63 6.37 1.8370 1 3 1 50.02 19.27 1.8235 3 1 3 50.55 21.27 1.8054 0 2 4 51.13 2.13 1.7865 0 3 2 52.72 1.31 1.7364 1 3 2 53.00 1.38 1.7279 4 1 1 53.39 11.64 1.7160 2 3 0 53.49 24.47 1.7132 4 0 2 53.63 6.92 1.7089 1 1 5 55.76 1.20 1.6487 2 0 5 56.76 8.14 1.6218 2 2 4 57.01 2.59 1.6154 3 1 4 57.29 5.13 1.6081 2 3 2 57.52 44.73 1.6024 3 2 3 57.60 9.35 1.6001 1 3 3 59.31 18.05 1.5581 4 2 0 60.27 6.62 1.5356 0 0 6 60.82 21.96 1.5229 1 2 5 61.75 1.42 1.5022 3 3 1 62.97 1.02 1.4760 4 2 2 63.02 7.84 1.4750 3 0 5 63.85 6.24 1.4578 5 0 1 64.06 12.81 1.4536 0 4 0 64.45 1.29 1.4457 3 3 2 64.72 4.35 1.4403 4 0 4 65.03 5.71 1.4341 2 2 5 65.26 3.12 1.4297 3 1 5 65.88 1.96 1.4178 2 0 6 66.07 1.85 1.4141 5 1 1 66.32 2.77 1.4095 1 4 1 66.50 1.42 1.4060 5 0 2 68.07 10.52 1.3774 2 1 6 68.14 2.60 1.3761 2 3 4 68.82 5.72 1.3642 3 3 3 68.92 1.08 1.3625 1 4 2 69.19 1.00 1.3578 0 2 6 70.35 1.63 1.3382 2 4 1 71.84 2.54 1.3141 1 3 5 72.89 3.20 1.2978 2 4 2 72.93 4.44 1.2971 5 1 3 73.16 13.44 1.2936 1 4 3 74.45 2.61 1.2743 2 2 6 74.58 1.32 1.2724 4 1 5 75.04 2.17 1.2658 5 2 2 76.87 4.29 1.2402 3 4 1 77.60 1.16 1.2304 6 0 0 79.16 10.27 1.2099 5 2 3 79.65 5.13 1.2037 6 1 0 80.86 1.29 1.1887 6 0 2 81.29 3.28 1.1836 1 2 7 82.11 1.73 1.1738 3 3 5 82.75 3.08 1.1663 2 4 4 82.90 1.06 1.1646 6 1 2 83.25 3.49 1.1606 3 0 7 83.99 2.54 1.1522 5 0 5 84.71 5.15 1.1443 2 3 6 84.92 1.24 1.1420 4 4 0 85.11 1.32 1.1399 1 5 1 86.01 1.43 1.1302 5 1 5 88.06 2.67 1.1092 2 5 0 88.14 7.05 1.1084 4 4 2 88.96 1.23 1.1003 6 2 2 89.30 2.64 1.0970 5 3 3 89.64 12.88 1.0937 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.