Each layer of phyllosilicates is composed of two types of sheets:
Correct answer: D. Both A & C
- A. Tetrahedral sheet
- B. Triple octahedral sheet
- C. Octahedral sheet
- D. Both A & C
Explanation
A phyllosilicate layer combines one tetrahedral sheet with one octahedral sheet, forming a 1:1 or 2:1 clay-mineral structure depending on the mineral. Therefore, both sheets are present.
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