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Principio Stoneware

Description: Legacy stoneware from United Clay Mines

Oxide Analysis Formula
SiO2 59.40% 4.03
Al2O3 25.00% 1.00
Fe2O3 2.80% 0.07
TiO2 0.90% 0.05
CaO 0.30% 0.02
MgO 0.20% 0.02
K2O 2.10% 0.09
Na2O 0.70% 0.05
LOI 8.60%n/a
Oxide Weight 372.91
Formula Weight 408.00

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Typecodes Stoneware Clay
These materials generally contain bentonite, ball clay, kaolin, feldspar, mica, quartz and some iron impurities. They can often be used as a body with few additives.

Data

% < 0.5 microns 52%
Drying Shrinkage n/a
Firing Shrinkage 19% at cone 9
Water absorption 0% at cone 9
Dry M.O.R. (50% Silica) 820 psi
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