Unformatted text preview: Clay minerals are made of two distinct structural units. .2 6 n m oxygen silicon Silicon tetrahedron aluminium or magnesium 0.29 nm hydroxyl or oxygen Aluminium Octahedron Source Siva If the centers of oxygens are connected, one obtains a volume which forms a tetrahedron, the basic tetrahedron. Silicon occupies the center of the tetrahedro n . The calculation of the electric charges shows that a tetrahedron is negatively charged. oxygène silice Silicon tetrahedron Source James Charges balance Silicon Oxygen 2.1 Structure of clay mineral...
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This note was uploaded on 03/21/2011 for the course GNG 4124 taught by Professor Soils during the Spring '11 term at Uni. of Nottingham Ningbo.
- Spring '11