Colemanite 40
Whiting 30
Silica 18
EPK 8
Magnesium carbonate 4
Total 100
Bentonite 1
Na2O 0.00 Al2O3 0.06 SiO2 0.69
K2O 0.00 B2O3 0.54 P2O5 0.00
MgO 0.08 TiO2 0.00
CaO 0.92 Fe2O3 0.00
Alumina:Silica ratio is 1.00:11.83
Neutral:Acid ratio is 1.00:1.15
Alk:Neut:Acid ratio is 1.00:0.60:0.69
Expansion: 76.9 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3
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