Cone 9-10 (KPG) G -200 feldspar 4210 EPK 180 Flint 2720 Whiting 900 Gerstley Borate 880 Dolomite 880 Zinc Oxide 170 Tin Oxide 260 ---------------------------------------------- 10,200 Add: 400 rutile  50 copper carbonate Chun glaze is an ancient and traditional Chinese glaze. It is not usually very blue. Tradtionally blue in a Chun is caused by [...]