Aluminosilicate Clays Flashcards
0
Q
Structure:
A
Repeating units of silica tetrahedra (SiO4 ^4-) in sheets - tetrahedra sheets.
1
Q
Alumina silicate clays are
A
Clay minerals of sedimentary rocks.
2
Q
Octahedral sheets:
A
Made from aluminium (Al^3+), each surrounded by 6 oxide (OH-) ions.
3
Q
Formed by…
A
Partial decomp of aluminosilicate minerals, Mica, feldspar and amphibole.
4
Q
Clays distinctive properties are from
A
The arrangement of the tetrahedra sheets and octahedral sheets.
5
Q
Tetrahedra sheet : octahedral sheet
A
1:1 stacked sheet
6
Q
Octa sheet : tetra sheet : octa sheet
A
2:1 stacked sheet.
7
Q
The inter layer space between sheets in held by
A
Hydrogen bonds
