IXL 45R

Description: Low temperature red earthware, terra cotta

Oxide	Analysis	Formula
CaO	0.81%	0.12
K2O	3.60%	0.31
MgO	1.88%	0.38
Na2O	1.40%	0.18
TiO2	0.59%	0.06
Al2O3	14.50%	1.16
P2O5	0.15%	0.01
SiO2	64.40%	8.72
Fe2O3	5.18%	0.26
MnO	0.07%	0.01
LOI	6.50%	n/a
Oxide Weight		753.01
Formula Weight		805.36

Notes

A very plastic low temperature red burning terra cotta clay that was mined, by I-XL Industries, near Elkwater, Alberta, Canada. It was originally described as a clay "consisting largely of illite and free silica with a bit of free siderite as small concretions or crystals between the grains". That being said, in physical terms it was a low-temperature terra cotta clay, undoubtedly vitrifying because of the presence of significant feldspar. It was fairly high in soluble salts and required barium carbonate to precipitate these in production bodies. Hundreds of thousands of tons were used to make brick and vitrified pipe. Plainsman Clays also used this for many years to make terra cotta clay bodies and as a source of feldspar in middle temperature red and brown stoneware. No longer available.

Related Information

IXL 45R fired bars

Fired from cone 5 (top) down to cone 1 (bottom).

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.
Materials	IXL 45D

By Tony Hansen
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