Cone 9 Tenmoku

Whiting 17
Zinc oxide (Calc.) 2
Custer feldspar 46
EPK 11
Silica 24

Red iron oxide 10

Na2O 0.08 Al2O3 0.44 SiO2 3.75
K2O 0.19 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.64 Fe2O3 0.24
ZnO 0.09

Alumina:Silica ratio is 1.00:8.51
Neutral:Acid ratio is 1.00:9.05
Alk:Neut:Acid ratio is 1.00:0.44:3.99

Expansion: 79.0 x 10e-7 per degree C