Ingredients

Ingredient Amount
Custer Feldspar 45.00
Zinc Oxide 2.25
Dolomite 2.00
Colemanite 10.00
Whiting 9.00
Flint 25.00
Add Amount
Copper Carbonate 1.00
Tin Oxide 1.00
Red Iron Oxide 0.50
Barium Carbonate 0.50

Instructions

This is a glaze from Mark Talbert (Utah Valley University).

The test tile is Coleman Porcelain fired in reduction.
It will run if applied thickly.  For good color, reduce early.