C/6 Clear ash glaze

Nepheline syenite 28
Ash Berhens 27
Silica 27
Ball clay 9
Frit 3134 9
Total 100
Bentonite 2

Na2O 0.19 Al2O3 0.34 SiO2 2.82
K2O 0.07 B2O3 0.08 P2O5 0.05
MgO 0.04 TiO2 0.01
CaO 0.71 Fe2O3 0.01

Alumina:Silica ratio is 1.00:8.28
Neutral:Acid ratio is 1.00:6.83
Alk:Neut:Acid ratio is 1.00:0.42:2.89

Expansion: 77.7 x 10e-7 per degree C
Oxides causing abnormal expansion: