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Ingredients

Ingredient Amount
Talc 3.64
Whiting 13.64
Zinc Oxide 4.55
Ferro Frit 3134 9.09
Custer Feldspar 48.18
EPK Kaolin 5.45
Silica 15.45
Add Amount
Tin Oxide 1.20
Copper Carbonate 0.80

Instructions

Published in "Copper Oxide" by John Britt, in the Jun 2012 issue of Ceramics Monthly.
Turquoise in oxidation and copper red in reduction.