Colemanite Glaze #2 Gloss/Transparent

Lepidolite 50
Colemanite 26
Zinc oxide (Calc.) 4
Silica 20
Total 100

Bentonite 2

Na2O 0.01 Al2O3 0.42 SiO2 2.45
K2O 0.17 B2O3 0.58 TiO2 0.00
MgO 0.02 Fe2O3 0.00
CaO 0.41
Li2O 0.24
ZnO 0.15

Alumina:Silica ratio is 1.00:5.82
Neutral:Acid ratio is 1.00:2.46
Alk:Neut:Acid ratio is 1.00:1.00:2.45

Expansion: 68.0 x 10e-7 per degree C
Oxides causing abnormal expansion: Li2O B2O3