Crystal Structure of Chabazite K

Journal Article · Fri Jul 15 04:00:00 EDT 2005 · Crystallography Reports

DOI:https://doi.org/10.1134/1.1996728· OSTI ID:20719203

Yakubovich, O V; Gavrilenko, P G; Pekov, I V ^[1]; Massa, W ^[2]

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1. Moscow State University, Vorob'evy gory, Moscow, 119992 (Russian Federation)
2. Philipps University, Marburg (Germany)

The crystal structure of the chabazite K with the formula (K{sub 1.33}Na{sub 1.02}Ca{sub 0.84})[Al{sub 4}Si{sub 8}O{sub 24}] {center_dot} 12.17H{sub 2}O from late hydrothermalites in the Khibiny alkaline massif (Kola Peninsula) is established by X-ray diffraction analysis (CAD4 four-circle diffractometer, {lambda}MoK{sub {alpha}} radiation, graphite monochromator, T = 193 K, 2{theta}{sub max} = 70 deg., R{sub 1} = 0.047 for 4745 reflections) on the basis of experimental data (6265 reflections) obtained from a twin (twinning parameter 0.535(1)): a = 13.831(3) A, c = 15.023(5) A, sp. gr. R3-barm, Z = 3, {rho}{sub calcd} = 2.016 g/cm{sup 3} . It is shown that cations occupy five independent positions in large cavities of the tetrahedral Al,Si,O anionic framework in potassium-rich chabazite. A comparative crystallochemical analysis of chabazites of different composition and origin is performed.

• OSTI ID: 20719203
• Journal Information: Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 4 Vol. 50; ISSN 1063-7745; ISSN CYSTE3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
CALCIUM COMPOUNDS
CATIONS
EXPERIMENTAL DATA
GRAPHITE
LATTICE PARAMETERS
POTASSIUM COMPOUNDS
SILICATES
SODIUM COMPOUNDS
SPACE GROUPS
TRIGONAL LATTICES
X-RAY DIFFRACTION