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Avery Kaolin

Oxide Analysis Formula
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

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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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