Amicite, K4Na4[Al8Si8O32].10H2O, is monoclinic, pseudotetragonal, space group I2, with a 10.226(1), b 10.422(1), c 9.884(1) Å, and β 88° 19(1)'. The topol. of its framework is the same as that of garronite, gismondine, and synthetic zeolite P and the structure can be described as formed by 2 untwisted double-crankshaft chains developed in 2 perpendicular directions. The Si/Al and Na/K distributions are ordered and consequently the symmetry is lowered from the topolog. symmetry of I41/amd to the real symmetry I2.
The crystal structure of amicite, a zeolite / A., Alberti; Vezzalini, Maria Giovanna. - In: ACTA CRYSTALLOGRAPHICA. SECTION B, STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY. - ISSN 0567-7408. - STAMPA. - B35:(1979), pp. 2866-2869.
The crystal structure of amicite, a zeolite
VEZZALINI, Maria Giovanna
1979
Abstract
Amicite, K4Na4[Al8Si8O32].10H2O, is monoclinic, pseudotetragonal, space group I2, with a 10.226(1), b 10.422(1), c 9.884(1) Å, and β 88° 19(1)'. The topol. of its framework is the same as that of garronite, gismondine, and synthetic zeolite P and the structure can be described as formed by 2 untwisted double-crankshaft chains developed in 2 perpendicular directions. The Si/Al and Na/K distributions are ordered and consequently the symmetry is lowered from the topolog. symmetry of I41/amd to the real symmetry I2.
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