Description
A pliable clay with smooth grog and color from manganese and iron. Fires almost black when reduced and dark brown/black in oxidation.
Approximate Cone: 5
Wet Color: Red/Brown
Fire Color
- Oxidation: Brown/Black
- Reduction: Black
Texture: Slightly Coarse
Penetrometer Target: 6.75
Average Shrinkage ±2%: 10.0%
Average Water Absorption ±1%: 3%
COE x 10-6: 7.275
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