Barium carbonate 7
Silica 12
EPK 9
Custer feldspar 55
Whiting 9
Zinc oxide 8
Total 100
Bentonite 2
Na2O 0.08 Al2O3 0.41 SiO2 2.91
K2O 0.19 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.30 Fe2O3 0.00
ZnO 0.31
BaO 0.11
Alumina:Silica ratio is 1.00:7.06
Neutral:Acid ratio is 1.00:7.08
Alk:Neut:Acid ratio is 1.00:0.41:2.91
Expansion: 79.8 x 10e-7 per degree C
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