Dear MS users
How to build a layer mineral ? I have read the tutorials of software but still confused with the buliding steps. My goal is to build one octahedral is sandwiched between two tetrahedral sheets (Montmorillonite). By the way, I import an analog structure (kaolinite) form 9.E-Layersilicates of software which consist of 1:1 octahedral and tetrahedral sheet, how to add one tetrahedral sheet upon prior structure? If not, should I build the base structures of silicon tetrahedral or octahedral? The first step should be draw chemical structure or ....? Any suggestion ?

Thanks

Acrd