Kaolinite is a hydrous silicate of aluminium with the formulae Al2Si2O5(OH)4 and a relative hardness of 3. It has a crumbly habit and forms the basis of most clay. Kaolinite is derived from the decomposition of feldspars, particularly aluminiumsilicates and is one of the most important of the natural industrial substances, used for bricks, ceramics, and many other applications. Research Kaolinite
Mica refers to a group of more than thirty silicate minerals having perfect cleavage in one direction and which easily split into thin, elastic, sheets.
Micas are closely associated with clay minerals such as gibbsite and kaolinite.
Micas are highly resistant to electricity and heat and are widely used in industry as insulators, and are also added to pint and wallpapers to give them a silky lustre. Research Mica
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
Abbreviations
Research Kaolinite
