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Oxide Weight419.77
Formula Weight471.34
If this formula is not unified correctly please contact us.

A very plastic ball clay of fairly high coal content. This material has some iron stone concretion material in it and thus it does contribute to some iron blossoms in cone 10R if not ground fine. RA2 has some soluble salts that produce a brownish surface coloration in reduction firing.

RA2 is similar to most commercial ball clays except that it has a higher iron content and it does not deflocculate well for use in casting slips due to the solubles content.

RA2 fires to a yellow to grey buff in oxidation and reduction.

Shr Porosity
Cone 7 6.9 3.4
Cone 9 7.3 2.5
Cone 11 7.2 2.0

IXL Industries clay quarry near Ravenscrag, Saskatchewan in 1984.

IXL Industries clay quarry near Ravenscrag, Saskatchewan in 1984.

Layers of the Whitemud Formation are being mined. The layer being extracted is a silty stoneware (equivalent to Plainsman 3D). Above that is a ball clay (Plainsman A2). Above that is a light burning stoneware (Plainsman A3 and B). A foot-thick layer of hard volcanic ash is visible in the green over burden at the top.

Out Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="IXL RA2" descrip="" searchkey="" loi="10.94" casnumber="70694-09-6"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.290" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.460" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="0.490" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.200" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.780" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="21.830" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="64.300" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.490" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="10.940" tolerance=""/> </volatiles> </material>

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