IXL RBD-95

Description: Buff Burning Stoneware

Oxide	Analysis	Formula
CaO	0.14%	0.01
K2O	2.02%	0.13
MgO	0.49%	0.07
Na2O	0.08%	0.01
TiO2	0.64%	0.05
Al2O3	17.32%	1.00
SiO2	72.46%	7.10
Fe2O3	1.14%	0.04
LOI	6.52%	n/a
Oxide Weight		555.29
Formula Weight		594.02

Notes

RBD is a multi-layer blend of stoneware clay materials mined in an IXL quarry about 3 km west of Ravenscrag, Sask. The components range from very plastic buff burning stonewares to a white burning ball clay to a silty medium temperature stoneware. It's plasticity is similar to a normal throwing or handbuilding clay body. It has a slight toothy texture which can be detected on the potter's wheel. Because it is a quarry blend, the proportions of the component materials can vary.

Raw color is dark grey.

It is stable to cone 10 ox and is similar to H550 in speck and color, although more mature and dense in appearance.

Related Information

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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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