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Jasper Slip

Oxide Analysis Formula
CaO 7.10% 0.54
K2O 2.70% 0.12
MgO 2.90% 0.31
Na2O 0.40% 0.03
TiO2 0.80% 0.04
Al2O3 14.10% 0.59
SiO2 55.10% 3.92
Fe2O3 5.60% 0.15
LOI11.30%
Oxide Weight 379.65
Formula Weight 428.02

Notes

United Clays recommends this as a substitute for Albany Slip. It is very plastic, much more so than Albany Slip (drying shrinkage is over 9%).

Particle size distribution (% undersize)
20um 94
10um 89
5um 79
2um 61
1um 49
0.5um 37

pH: 8.0

Fired color cone 4: Chocolate semi-gloss
Cone 6: Dark brown gloss
Cone 10: Brown translucent

Thermal Expansion: See United Clay data sheet for chart.

Related Information

Jasper slip powder

Jasper Slip fired bars

Fired at cone 2, 1, 02, 05 (top to bottom). Reaches zero porosity between cone 1 and 2.

Links

Materials Albany Slip
Materials Alberta Slip
Materials Arroyo Slip
Suppliers WBB
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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