Occurs in Pinal County. Common in Arizona.
Chemical Formula: Al2Si2O5(OH)4
Specific Gravity: 2.16-2.68
Hardness: 1-2
Kaolinite is a clay mineral that often forms as white, platy or earthy masses. It is one of the most common minerals in the clay-sized fraction of sediments and soils.
Next Pinal County mineral: Kentrolite