Calcite

Calcite

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Formula: CaCO3

In stoneware glazes (cone 7-12), it promotes a matt finish and enhances chemical durability by producing harder and more chemically resistant glaze. In stoneware bodies (cone 7-12) it acts as a flux (typically >3%), and it will increase shrinkage and strength by lowering the point of vitrification while decreasing porosity.

Melting Point: 825oC

Molecular weight: 10.1

Glaze Material Group: Flux

Alternative Name: Whiting, Calcium Carbonate, chalk

Safety: No significant hazards
No recommended products at the moment.