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Crystal structure analysis and refinement of Kalabsha kaolinite (Al 2 Si 2 O 5 (OH) 4 )
Author(s) -
ElSayed Karimat,
Heiba Z. K.,
AbdelRahman A. M.
Publication year - 1990
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170250314
Subject(s) - triclinic crystal system , kaolinite , crystal structure , crystallography , materials science , tetrahedron , mineralogy , chemistry
The crystal structure of the kaolinite mineral from Kalabsha, Aswan, Egypt, has been investigated with a two‐step procedure of the X‐ray powder pattern‐fitting. The unit cell is found to be triclinic, P1, a = 5.1577(15), b = 8.9417(23), c = 7.3967(40) Å, α = 91.672(5)°, β = 104.860(2) and γ = 89.898(2)°. The refinements of the non‐hydrogen atomic positions showed a reliability factors R WB = 0.037 and R B = 0.0417. The average rotation angle in the tetrahedral layer in 10°.