Coquimbite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern Fang J H, Robinson P D American Mineralogist 55 (1970) 1534-1540 Crystal structures and mineral chemistry of hydrated ferric sulfates. I. The crystal structure of coquimbite CELL PARAMETERS: 10.95019 10.95019 17.07429 90.00000 90.00000 120.0000 SPACE GROUP: P-31c X-RAY WAVELENGTH: 1.541838 MAX. ABS. INTENSITY / VOLUME**2: 11.93369492 2-THETA INTENSITY D-SPACING H K L 9.28 46.11 9.4831 1 0 0 10.32 26.79 8.5371 0 0 2 10.62 100.00 8.2903 1 0 1 13.91 10.66 6.3448 1 0 2 16.14 43.13 5.4751 1 1 0 18.66 15.63 4.7416 2 0 0 19.20 6.33 4.6087 2 -1 2 19.20 35.18 4.6087 1 1 2 19.38 7.52 4.5687 2 0 1 20.75 2.43 4.2686 0 0 4 22.79 2.46 3.8924 1 0 4 24.38 33.73 3.6430 2 0 3 24.78 5.19 3.5843 2 1 0 25.33 20.52 3.5078 3 -1 1 26.42 43.99 3.3664 1 1 4 26.42 8.34 3.3664 2 -1 4 26.92 2.55 3.3048 2 1 2 27.71 4.77 3.2129 1 0 5 28.07 1.50 3.1724 2 0 4 28.66 14.64 3.1082 3 0 1 29.39 23.46 3.0330 3 -1 3 30.08 1.81 2.9644 3 0 2 31.37 1.30 2.8457 0 0 6 32.24 13.88 2.7710 2 0 5 32.33 36.01 2.7634 3 0 3 32.56 6.10 2.7449 2 1 4 32.56 6.68 2.7449 3 -1 4 34.34 1.08 2.6068 4 -2 2 35.26 13.57 2.5403 3 0 4 35.49 1.12 2.5250 1 1 6 35.49 3.79 2.5250 2 -1 6 35.65 1.47 2.5136 3 1 2 36.27 1.74 2.4724 3 -1 5 37.61 3.27 2.3875 3 1 3 37.61 2.59 2.3875 4 -1 3 37.88 2.94 2.3708 4 0 0 38.26 1.47 2.3483 4 0 1 38.75 3.77 2.3197 3 0 5 39.02 8.42 2.3044 4 -2 4 41.43 1.63 2.1756 3 2 0 41.78 1.40 2.1581 3 2 1 42.82 1.08 2.1082 5 -2 2 43.35 4.49 2.0837 4 -1 5 43.67 2.45 2.0694 4 1 0 44.00 1.40 2.0544 5 -1 1 44.88 1.93 2.0165 3 -1 7 45.00 1.54 2.0111 5 -1 2 45.93 6.43 1.9729 4 -2 6 46.59 2.35 1.9462 2 0 8 46.63 7.40 1.9448 4 1 3 48.88 1.62 1.8603 1 0 9 48.83 9.56 1.8621 5 -1 4 48.83 3.02 1.8621 4 1 4 49.64 1.02 1.8338 3 -1 8 49.89 4.38 1.8250 3 3 0 51.10 3.24 1.7847 6 -3 2 51.10 2.63 1.7847 3 3 2 51.17 1.41 1.7824 4 2 1 51.59 4.85 1.7688 3 0 8 51.56 1.58 1.7698 5 -1 5 51.56 5.42 1.7698 4 1 5 52.73 2.39 1.7332 5 0 4 52.90 2.50 1.7284 5 -2 6 53.74 1.22 1.7032 5 1 0 53.85 1.76 1.7001 4 0 7 54.43 9.59 1.6832 2 2 8 54.43 2.50 1.6832 4 -2 8 54.66 1.26 1.6768 3 -1 9 54.61 1.02 1.6781 6 -3 4 54.77 1.19 1.6737 5 -1 6 54.77 2.24 1.6737 4 1 6 54.89 1.18 1.6703 5 1 2 56.61 1.98 1.6236 3 2 7 58.30 1.11 1.5805 6 0 0 58.40 2.77 1.5780 5 -1 7 60.15 1.07 1.5362 6 -3 6 60.93 2.20 1.5185 5 2 0 61.66 1.34 1.5023 3 0 10 61.99 2.63 1.4951 7 -2 2 62.42 3.25 1.4857 5 -1 8 62.42 2.76 1.4857 4 1 8 62.59 1.76 1.4822 6 0 4 64.59 1.19 1.4410 6 1 1 65.11 1.54 1.4307 5 2 4 66.81 1.57 1.3984 4 1 9 67.43 1.81 1.3871 6 -3 8 67.98 1.44 1.3771 1 1 12 68.46 1.33 1.3688 4 4 0 69.45 2.23 1.3515 4 4 2 70.64 1.08 1.3317 7 -1 5 71.55 1.54 1.3170 5 -1 10 71.49 1.09 1.3179 8 -3 3 72.42 1.78 1.3034 4 4 4 72.80 1.78 1.2975 3 0 12 76.64 1.67 1.2417 5 -1 11 79.43 1.45 1.2050 7 1 4 81.56 1.53 1.1789 7 1 5 81.56 1.53 1.1789 7 1 5 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.