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  • CORNISH STONE - SYNTHETIC

CORNISH STONE - SYNTHETIC

SKU:
A$15.10
11 241.56 A$11.00 - A$241.56
Unavailable
per item
Cornish Stone (Synthetic)
Non synthetic Cornish Stone is a low iron feldspar material used as a flux in clay bodies and glazes. Is mined in the Cornwall area of the UK and melts between 1150-1300 °C. It has a diversified selection of fluxes than other feldspars and also has one of the highest silica contents. By itself it does not melt as well as feldspars (melt flow begins around cone 11 oxidation). It is used in engobes for its adhesive power during and after firing.  In glazes, it has low shrinkage.

Other feldspars, and tends to be a mix of igneous rock in different stages of decomposition. Although Cornish stone is quite variable in composition, its low iron makes it an attractive material.

Synthetic substitutes for Cornish stone are easy to blend from feldspars to approximate the analysis of Cornish stone. These substitutes have the advantage of having no fluorine. 

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