Clay minerals can be classified as 1:1 or 2:1, this originates because they are fundamentally built of tetrahedral silicate sheets and octahedral hydroxide sheets, as described in the structure section below.
粘土矿物可以分类为1：1或2：1，这是因为它们基本上由四面体硅酸盐片和八面体氢氧化物片构成，如下面结构部分所述。