Tschernichite Alberti A, Cruciani G, Galli E, Merlino S, Millini R, Quartieri S, Vezzalini G, Zanardi S Journal of Physical Chemistry B106 (2002) 10277-10284 Crystal structure of tetragonal and monoclinic polytypes of tschernichite, the natural counterpart of synthetic zeolite beta Locality: Mt. Adamson, Northern Victoria Land, Antarctica Sample: small crystal, tetragonal Note: Mg position adjusted to match reported bond lengths _database_code_amcsd 0013154 CELL PARAMETERS: 12.6340 12.6340 26.6080 90.000 90.000 90.000 SPACE GROUP: P4_122 X-RAY WAVELENGTH: 1.541838 Cell Volume: 4247.114 Density (g/cm3): 1.830 MAX. ABS. INTENSITY / VOLUME**2: 19.75731980 RIR: 3.515 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.00 21.20 12.6340 1 0 0 4 7.75 100.00 11.4128 1 0 1 8 9.65 11.79 9.1613 1 0 2 8 11.93 2.65 7.4166 1 1 2 8 14.41 3.76 6.1462 2 0 1 8 16.04 1.16 5.5269 2 1 1 8 17.05 1.16 5.2005 2 1 2 8 18.09 5.00 4.9043 1 0 5 8 19.38 1.52 4.5806 2 0 4 8 19.42 1.15 4.5719 1 1 5 8 20.63 1.00 4.3063 2 1 4 8 20.98 2.70 4.2345 2 2 2 8 21.10 2.91 4.2113 3 0 0 4 21.23 1.84 4.1844 1 0 6 8 21.84 10.57 4.0699 2 0 5 8 22.14 29.59 4.0150 3 0 2 8 22.25 1.14 3.9952 3 1 0 8 22.38 1.78 3.9722 1 1 6 8 22.50 6.72 3.9509 3 1 1 8 24.44 2.52 3.6427 3 1 3 8 24.45 2.98 3.6400 1 0 7 8 25.03 4.89 3.5582 3 0 4 8 25.53 1.88 3.4885 2 1 6 8 25.64 3.70 3.4740 3 2 1 8 26.80 2.57 3.3260 0 0 8 2 27.38 3.56 3.2570 2 0 7 8 28.46 4.42 3.1365 4 0 1 8 29.24 7.59 3.0538 3 0 6 8 30.01 1.85 2.9779 3 3 0 4 30.37 2.15 2.9430 2 0 8 8 30.55 1.82 2.9266 3 2 5 8 31.07 1.75 2.8787 1 0 9 8 32.16 1.04 2.7831 4 1 4 8 32.51 1.16 2.7539 3 1 7 8 32.96 3.72 2.7179 3 3 4 8 33.47 1.42 2.6777 2 0 9 8 34.36 1.06 2.6101 3 0 8 8 42.95 4.08 2.1057 6 0 0 4 45.57 1.05 1.9907 3 2 11 8 47.32 1.29 1.9208 5 0 9 8 55.24 1.21 1.6630 0 0 16 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.