Tetrawickmanite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R100003 Ross C R, Bernstein L R, Waychunas G A American Mineralogist 73 (1988) 657-661 Crystal-structure refinement of stottite, FeGe(OH)6 _database_code_amcsd 0001167 CELL PARAMETERS: 7.8655 7.8655 7.7938 90.000 90.000 90.000 ALTERNATE SETTING FOR SPACE GROUP: P4_2/n ATOM X Y Z OCCUPANCY ISO(B) Fe 0.00000 0.00000 0.00000 1.000 0.704 Ge 0.50000 0.00000 0.00000 1.000 0.613 OH 0.26700 0.44300 0.58300 1.000 1.337 OH 0.57300 0.26800 0.56500 1.000 1.089 OH 0.43700 0.42100 0.26700 1.000 1.304 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 7 +/- 7 +/- 7 MAX. ABS. INTENSITY / VOLUME**2: 40.90429781 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 19.61 8.08 4.5272 1 1 1 22.61 100.00 3.9327 2 0 0 22.82 46.11 3.8969 0 0 2 32.19 19.40 2.7809 2 2 0 32.34 42.30 2.7681 2 0 2 36.15 5.07 2.4850 3 0 1 36.42 4.81 2.4669 1 0 3 37.97 1.66 2.3695 1 3 1 37.97 5.02 2.3695 3 1 1 39.82 19.24 2.2636 2 2 2 41.51 1.04 2.1753 3 0 2 43.06 1.92 2.1008 3 2 1 43.30 1.68 2.0898 1 2 3 46.16 14.72 1.9664 4 0 0 46.61 6.38 1.9484 0 0 4 51.99 11.07 1.7588 4 2 0 51.99 8.03 1.7588 2 4 0 52.10 19.92 1.7555 4 0 2 52.41 19.14 1.7459 2 0 4 57.49 15.47 1.6031 4 2 2 57.49 11.62 1.6031 2 4 2 57.78 14.13 1.5957 2 2 4 67.34 3.04 1.3904 4 4 0 67.70 5.24 1.3841 4 0 4 70.90 1.12 1.3292 3 5 1 72.13 4.82 1.3096 4 4 2 72.38 4.12 1.3056 4 2 4 72.38 4.82 1.3056 2 4 4 76.62 2.18 1.2436 2 6 0 76.62 1.48 1.2436 6 2 0 76.70 3.93 1.2425 6 0 2 77.37 3.65 1.2334 2 0 6 81.19 4.20 1.1848 6 2 2 81.19 4.13 1.1848 2 6 2 81.85 4.34 1.1769 2 2 6 85.87 2.86 1.1318 4 4 4 89.95 1.54 1.0907 4 6 0 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.