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Blue Grey Plastic

Highly plastic red burning earthenware

Alternate Names: 98 Blue Grey Plastic, 98 BGP

OxideAnalysisFormula
CaO0.49%0.083
MgO1.58%0.374
K2O3.25%0.329
Na2O1.33%0.205
SrO0.01%0.001
P2O50.11%0.007
TiO20.50%0.060
Al2O315.35%1.436
SiO266.90%10.625
Cr2O30.01%0.001
Fe2O33.72%0.222
MnO0.02%0.003
LOI6.80
Oxide Weight890.28
Formula Weight955.24
If this formula is not unified correctly please contact us.

An extremely plastic red burning fine grained material from southern Saskatchewan. It is used in brick manufacture and in pottery clay bodies.

Ba ppm: 1006
Cr ppm: 39
Ni ppm: 34
SO3: 0.04
Sr ppm: 66
V ppm: 78

Lording Labs analysis 2006 showed 16.2 Al2O3, 64.0 SiO2, 4.6 LOI, 4.55 FeO3, 2.7 SO3.


Redart fired bars vs. Plainsman Blue Grey Plastic

Redart fired bars vs. Plainsman Blue Grey Plastic

The Redart clay bars (left) are fired at cones 06, 04, 2, 4 & 5 (top to bottom). The Plainsman Blue Grey Plastic bars (right) are fired at 06, 04, 03, 02, 2 & 4. The SHAB test procedure (used to make these) gives us the firing shrinkage and porosity at each temperature, these are direct indicators of the fired maturity. Notice how much the fired color changes with increasing temperature. The fired maturity is pretty similar but the BGP is a little browner in color. It is also much more plastic (the drying shrinkage quite a bit higher).

Out Bound Links


By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Blue Grey Plastic" descrip="Highly plastic red burning earthenware" searchkey="98 Blue Grey Plastic, 98 BGP" loi="0.00" casnumber="70694-09-6"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.490" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="1.580" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="3.250" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="1.330" tolerance=""/> <oxide symbol="SrO" name="Strontium Oxide, Strontia" status="" percent="0.010" tolerance=""/> <oxide symbol="P2O5" name="Phosphorus Pentoxide" status="" percent="0.110" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.500" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="15.350" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="66.900" tolerance=""/> <oxide symbol="Cr2O3" name="Chrome Oxide" status="" percent="0.010" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="3.720" tolerance=""/> <oxide symbol="MnO" name="Manganous Oxide" status="" percent="0.020" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="6.800" tolerance=""/> </volatiles> </material>


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