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Avery Kaolin
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| K2O | 0.89% | 0.03 | |
| Na2O | 0.16% | 0.01 | |
| TiO2 | 0.06% | - | |
| Al2O3 | 37.47% | 1.00 | |
| SiO2 | 46.73% | 2.12 | |
| Fe2O3 | 0.74% | 0.01 | |
| LOI | 13.52% | n/a | |
| Oxide Weight | 234.24 | ||
| Formula Weight | 270.86 | ||
Notes
No longer mined.
Noted for its flashing when used in slip and salt/soda firing.
Related Information
Links
| Materials |
Kaolin
The purest of all clays in nature. Kaolins are used in porcelains and stonewares to impart whiteness, in glazes to supply Al2O3 and to suspend slurries. |
| Typecodes |
Kaolin
Pure clay mineral, there are many brand names of varying purity and iron content. |
Data
| Drying Shrinkage | 5.1% |
|---|---|
| Firing Shrinkage | 10% at cone 10 |
| Ultimate Particle Size Distribution | 20 microns: 98% 10: 78% 5: 50% 2: 30% 1: 22% |
| Pyrometric Cone Equivalent | 33-34 |
| Water absorption | 10-12% at cone 10 |
| Dry M.O.R. (50% Silica) | 102C |
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