CHEMICAL CHARACTERISTIC: 
SiO244%
Al2O319
Fe2O39
MgO27
PHYSICAL CHARACTERISTICS: 
Combustion TempWill not burn
pH7.0-7.1 (in water)
Cation Exchange Capacity50-150 M.eq/100g (typically)
Moisture<2.5% (total of free and intrinsic moisture)
Heat Related Loss<1.6% weight loss at 800 degrees C
ColorTan or off white
Particle ShapeSheet Platelets
Hardness1.5-2.0 mohs
Density6.0-12.0 #/ft3
Aspect RatioUp to 20,000
Fusion TemperatureOver 2,200 degrees F
Particle Size Distribution (typical): 
D9018 Micron
D508 Micron
D102 Micron

ORIGIN: USA