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Oxide Analysis Formula
SiO2 59.20% 1.37
MgO 23.50% 0.81
Al2O3 0.81% 0.01
Fe2O3 0.25% 0.00
CaO 5.80% 0.14
Na2O 1.23% 0.03
K2O 1.21% 0.02
TiO2 0.04% 0.00
Oxide Weight 127.98
Formula Weight 139.04


From our information, this is the forerunner of Pioneer talc.
The chemistry is a little different, but that could be attributed to variation in the material, different blending, mining location, etc.

Related Information


Materials Talc
Materials Pioneer 2661 Talc
Typecodes Flux Source
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Hazards Talc Hazards Overview
Talc is invaluable in the ceramics industry, it is used as a glaze and body ingredient and as a parting a release agent in various processes. Is it safe?

By Tony Hansen

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