Cone #29 Glacé

Frit 3134 8
Gerstley borate 8
Custer feldspar 46
Silica 19
EPK 4
Dolomite 6
Whiting 9
Total 100

Na2O 0.13 Al2O3 0.30 SiO2 3.01
K2O 0.16 B2O3 0.19 P2O5 0.00
MgO 0.13 TiO2 0.00
CaO 0.59 Fe2O3 0.00

Alumina:Silica ratio is 1.00:10.13
Neutral:Acid ratio is 1.00:6.18
Alk:Neut:Acid ratio is 1.00:0.49:3.01

Expansion: 76.3 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3