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) 
U.S. STANDARD SIEVE
100
200
325
325(PAN)
PERCENT LIMITS
BY WEIGHT
LOWHIGH
3.018.0
22.060
17.041.0
6.024.0
PERCENT LIMITS
BY VOLUME
LOWHIGH
PHYSICAL CHRACTERISTICS 
Bulk Density8.5 to 9.5 lbs./cu. ft.
Specific Gravity2.34
ColorOff White