C/6 Semi-opaque ash glaze

Custer feldspar 26
Nepheline syenite 25
Ash Berhens 25
Ball clay 13
Whiting 6
Talc 4
Total 100
Bentonite 2

Na2O 0.14 Al2O3 0.39 SiO2 1.95
K2O 0.12 P2O5 0.04
MgO 0.10 TiO2 0.01
CaO 0.64 Fe2O3 0.01
MnO 0.00

Alumina:Silica ratio is 1.00:4.94
Neutral:Acid ratio is 1.00:5.09
Alk:Neut:Acid ratio is 1.00:0.39:2.01

Expansion: 88.0 x 10e-7 per degree C