Bass #6 Quintessence

Barium carbonate 10
Dolomite 4
EPK 15
Custer feldspar 54
Whiting 7
Zinc oxide 10
Total 100

Na2O 0.07 Al2O3 0.39 SiO2 1.96
K2O 0.16 P2O5 0.00
MgO 0.06 TiO2 0.00
CaO 0.25 Fe2O3 0.00
ZnO 0.33
BaO 0.13

Alumina:Silica ratio is 1.00:4.99
Neutral:Acid ratio is 1.00:5.00
Alk:Neut:Acid ratio is 1.00:0.39:1.96

Expansion: 85.5 x 10e-7 per degree C