Cone 4-6. Dark brown clay, good for hand building and wheel, not fussy, some grog.
Gives a reduction-like dark brown color in an electric kiln. Smooth and plastic. Contains manganese and a small amount of fine grog is added. It's good for all techniques.
Recommend firing: cone 5?
Cone 4 Shrinkage: 11.0%; Absorption: 2.4%
Cone 6 Shrinkage: 11.5%; Absorption: 1.0%