Tag «tale minerals»

Minerals of Clay Group

Clays consist mainly of a group of crystalline substances known as the ”clay minerals”. They are all essentially hydrous aluminium silicates. Well known minerals are of as under: (1). Kaolinite: Al2O3 2SiO2 Physical properties of kaolinite are as under; Crystal System: Triclinic crystal system. Cleavage: Perfect basal cleavage. Hardness: 2 at Moh’s Scale Sp.gr: Specific …