Desertalc
Description: Originally from Johns-Manville
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| SiO2 | 59.20% | 1.37 | |
| MgO | 23.50% | 0.81 | |
| Al2O3 | 0.81% | 0.01 | |
| Fe2O3 | 0.25% | - | |
| CaO | 5.80% | 0.14 | |
| Na2O | 1.23% | 0.03 | |
| K2O | 1.21% | 0.02 | |
| TiO2 | 0.04% | - | |
| LOI | 7.96% | n/a | |
| Oxide Weight | 127.98 | ||
| Formula Weight | 139.04 | ||
Notes
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
Links
| Materials |
Talc
A source of MgO for ceramic glazes, a flux or thermal expansion additive in clay bodies, also used in the manufacture of cordierite. |
| 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? |
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