Figure 1

Stick-and-ball (top) and polyhedral (bottom) representation of lizardite (Mg3(Si2O5)(OH)4) crystal structure along the [001] direction. The apical and basal oxygen atoms are labeled as Oa and Ob, respectively. The hydroxyl (OH)− position types are also indicated. Metal cation is in the octahedral cage (orange) and Si atoms are in the tetrahedral cage (in blue).