A dark/black coarse cone 5 clay capable of being used for tile and larger sculptural works. Pieces up to 5 inches thick have been fired with no bloating issues. Testing glazes recommended. 
 
Cone: 5
Wet Color: Chocolate Brown
Fired color: Black
Texture: Coarse
Penetrometer Target: 6.25 
Avg. Water Absorption 1±%: 10.48%
Avg. Shrinkage 2±%: 9%
COE x 10-6: 5.56