Description
Weathered and decomposed volcanic ash.
Highly colloidal material of extreme plasticity added to glazes as a suspending agent (up to 3% by dry weight) and into clay bodies to improve plasticity (up to 5%).
High shrinkage.
Weathered and decomposed volcanic ash.
Highly colloidal material of extreme plasticity added to glazes as a suspending agent (up to 3% by dry weight) and into clay bodies to improve plasticity (up to 5%).
High shrinkage.
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