Bass #52 Quintessence

Silica 10
Frit 3134 39
EPK 14
Kaolin (Calc.) 13
Custer feldspar 7
Whiting 17
Total 100

Na2O 0.18 Al2O3 0.29 SiO2 1.95
K2O 0.02 B2O3 0.33 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.80 Fe2O3 0.00

Alumina:Silica ratio is 1.00:6.76
Neutral:Acid ratio is 1.00:3.15
Alk:Neut:Acid ratio is 1.00:0.62:1.95

Expansion: 80.4 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3