Colemanite Glaze #1 Gloss/Transparent

Colemanite 32
Silica 30
Custer feldspar 20
Talc 14
EPK 4
Total 100

Bentonite 2

Na2O 0.04 Al2O3 0.17 SiO2 2.86
K2O 0.07 B2O3 0.73 P2O5 0.00
MgO 0.33 TiO2 0.00
CaO 0.56 Fe2O3 0.00
MnO 0.00

Alumina:Silica ratio is 1.00:17.18
Neutral:Acid ratio is 1.00:3.18
Alk:Neut:Acid ratio is 1.00:0.90:2.86

Expansion: 57.1 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3