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Peerless 3 Kaolin

Alternate Names: Peerless China Clay, Peerless Kaolin

Oxide Analysis Formula
SiO2 44.80% 1.94
Al2O3 39.20% 1.00
Fe2O3 0.75% 0.01
TiO2 1.60% 0.05
MgO 0.08% 0.01
CaO 0.06% 0.00
Na2O 0.03% 0.00
K2O 0.44% 0.01
Oxide Weight 226.27
Formula Weight 260.08


A large particle size kaolin of low plasticity. It is a secondary clay and has been mined since the 1940s. It is a moderately coarse grained clay that imparts more plasticity to a casting mix than similar clays produced by fractionation. It is used in sanitaryware, artware, generalware, floor tile, electrical porcelain, chemical porcelain and special refractories. In addition to improving casting properties, this material has excellent pressing properties.

This material is well crystallized with kaolinite being the predominant mineral. There is a trace of muscovite and less than 0.5% quartz.

Related Information


Materials McNamee Kaolin
Materials Dixie Clay
Materials Langford Kaolin
Materials Bilt-Cote Kaolin
Materials PAR Kaolin
Materials Peerless 2 Kaolin
Materials Kaolin
Typecodes Kaolin
Pure clay mineral, there are many brand names of varying purity and iron content.


Ultimate Particle Size Distribution-12 microns: 94% -5 microns: 76% -2.7 microns: 63% -1.0 microns: 50% -0.4 microns: 34%
Pyrometric Cone EquivalentCone 34-35
Surface Area (m2/gm)15.6
Median Particle Size (Microns)1.2
pH for dry powder4-6

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