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Schematic representation of the arrangement of the atomic planes: (a) 1:1 trioctahedral sheets, (b) 2:1 trioctahedral sheets, (c) 1:1 dioctahedral sheets, (d) 2:1 dioctahedral sheets. 
oxygen, 
silicon, 
magnesium/aluminum, 
hydroxyl groups. Adapted from https://www.edafologia.net/, last visited 12 May 2021.
