St. Rose red is a unique low plasticity highly iron stained refractory clay that is useful for imparting red coloration to high and medium temperature clay bodies. While many iron bearing plastic clays are on the market, almost all of these are low temperature materials and thus flux to produce brown rather than red colors and higher temperatures. St. Rose Red also contains particulate iron materials which produce a fired character at coarser mesh sizes that is unique in the industry.
Trace Elements ppm Nov 97:
Pre Nov 97 Analysis:
Top to bottom: Cone 10 reduction, cone 11, 9, 8, 7 oxidation. This is a refractory material despite the fact that it is high in iron.
The natural Plainsman St. Rose Red clay before it is ground. This has about 6% iron oxide and is used to color high temperature throwing and sculpture bodies. It is quite refractory, very unusual for a clay this high in iron. It is from St. Rose, Manitoba.
Cone 10R firing of Plainsman Fire-Red (left), St. Rose Red 42 mesh (center) and St. Rose Red 10 mesh (right). The 10 mesh material produces a reduction speckle and deep red color that is very unique.
|Materials||M2 Red Stoneware|
|Materials||Plainsman Red Fireclay|
|Materials||A1 Ball Clay|
|Materials||Newman Red Clay|
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.