CHEMICAL ANALYSIS: 
SiO2 72.5%
Na2O13.7
CaO9.75
MgO3.3
K2O0.1
Othersapprox 0.25%
PHYSICAL  ANALYSIS: 
Specific Gravity:2.5
Softens at730 Celsius
OdorNone
Appearanceoff white powder or small grains
Nominal size90+% 600-200
MeshMicronretained
306000.3%
4042524.4
5030059.6
6025091.5
8018098.9
Packing: 50 lb Paper bags on wooden pallets with plastic wrap

Origin: USA