Crystal form of the Kaolinite is Pseudo-hexagonal lamella. The kaolinite has high crystallinity and fine grain size. Crystal form of the illite is lamella that resem-bles round and has smoothedge.

• 质量好，矿物组成主要为高岭石和石英，其次有伊利石，高岭石为自形的假六方片状晶体，有序度高，晶体粒度细，伊利石多属边界圆滑的等度片状晶体。