TYPICAL CHEMICAL ANALYSIS 
Crystalline SilicaNot detectable
Amorphous Silica (SiO2)72.8%
A12O314.6%
K2O5.8%
Na2O3.9%
Fe2O30.75%
CaO0.28%
CuO0.00005%
HgNot detectable
AsNot detectable
SOLUBLES 
In boiling water for one hour0.88%
In strong mineral acid for one hour1.91%
In strong Alkali (Sodium Hydroxide) for one hour18.6%
Acid soluble Fe2O3 for one hour (1% HCL)0.047%
Acid soluble CaO for one hour (1% HCL) 
PARTICLE SIZE ANALYSIS
(BY U.S. STANDARD SIEVE)
 
+10046%
100/20023%
-20031%
PHYSICAL CHRACTERISTICS 
Bulk Density5.4 to 6.2 lbs./cu. ft.