Bass #18 Quintessence

Dolomite 3
Silica 17
Frit 3134 13
EPK 17
Custer feldspar 14
Whiting 20
Wollastonite 9
Zinc oxide 7
Total 100

Na2O 0.06 Al2O3 0.18 SiO2 1.54
K2O 0.03 B2O3 0.09 P2O5 0.00
MgO 0.03 TiO2 0.00
CaO 0.70 Fe2O3 0.00
ZnO 0.18

Alumina:Silica ratio is 1.00:8.68
Neutral:Acid ratio is 1.00:5.81
Alk:Neut:Acid ratio is 1.00:0.27:1.54

Expansion: 79.6 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3