Ingredients

Ingredient Amount
Dolomite 5.00
Whiting 6.00
NC-4 Feldspar 67.00
EPK Kaolin 5.00
Silica 17.00
Add Amount
Cobalt Carbonate 4.00
Red Iron Oxide 6.00

Instructions

Published in "LSU Cone 10 Glazes" in the Sep 2015 issue of Ceramics Monthly.

An opaque, satin black glaze. May develop metallic specks. Contains cobalt as a colorant, so any glaze used over it that dilutes the black will produce a deep blue color. In the image shown, the glaze appears on a porcelain test tile fired to cone 10 in a reduction atmosphere.
Mix all ingredients prior to adding the water.