Bass #1 Quintessence

Silica 20
EPK 17
Custer feldspar 26
Whiting 26
Zinc oxide 11
Total 100

Na2O 0.03 Al2O3 0.24 SiO2 1.74
K2O 0.07 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.60 Fe2O3 0.00
ZnO 0.31

Alumina:Silica ratio is 1.00:7.11
Neutral:Acid ratio is 1.00:7.13
Alk:Neut:Acid ratio is 1.00:0.24:1.74

Expansion: 78.1 x 10e-7 per degree C