DF Cornwall Stone

Oxide	Analysis	Formula
CaO	0.20%	0.03
K2O	3.80%	0.38
Na2O	3.90%	0.59
Al2O3	12.01%	1.10
SiO2	79.57%	12.40
Fe2O3	0.06%	-
LOI	0.45%	n/a
Oxide Weight		931.95
Formula Weight		936.17

Defluorinated or DF Cornwall Stone is a processed material, micaceous iron and fluorine are removed by a flotation process.

Related Information

Materials	Cornwall Stone
Typecodes	Feldspar The most common source of fluxes for high and medium temperature glazes and bodies.

By Tony Hansen
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