CHEMICAL CHARACTERISTICS: 
As delivered, before exposure to high temperature Crystalline
and Bound Water7-13%Analysis after calcination
7-13%
SiO244%
Al2O319%
Fe2O39%
MgO27%
PHYSICAL CHARACTERISTICS: 
Combustion TempWill not burn
pH6. to 8.
Cation Exchange Capacity50-100 M.eq/100g (typically)
ColorBrown or Dark Gold
Particle ShapeSheet Platelets
Hardness, Mohs1 to 2, very soft
Density50 to 70 lbs/ft3
Aspect Ratio20 to 40 :1
Expansion Ratio10 :1
Expansion Temperature1200 to 1800 degrees F
Melting TemperatureOver 2,200 degrees F
Particle Size Distribution (typical): 
+30 US mesh0 to 1.5%
30/500 to 20
50/10030 to 76
-10024 to 7

ORIGIN: USA
PACKING:50 Lb paper bags or Supersacks