Jasper Red

Oxide	Analysis	Formula
K2O	0.71%	0.04
MgO	0.23%	0.03
Na2O	0.23%	0.02
TiO2	1.69%	0.12
Al2O3	17.26%	1.00
SiO2	63.05%	6.20
Fe2O3	8.43%	0.31
LOI	8.40%	n/a
Oxide Weight		541.32
Formula Weight		590.96

Notes

A very red burning medium to low plasticity stoneware clay useful in both plastic and casting bodies. Crude color is red-brown.

Shrinkage:
Cone 05: 6%
Cone 1: 9%
Cone 5: 10%
Cone 10: 11-12%

Absorption:
Cone 05: 19%
Cone 1: 13%
Cone 5: 12%
Cone 10: 8%

+200 mesh residue Wet: 9.5%
PCE: 14
M.O.R.: 274 psi

Related Information

Links

Typecodes	Clay Other Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.

By Tony Hansen
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