Plastic Vitrox

White Burning Plastic Feldspar

Chemistry

CaO	1.000
K2O	5.000
MgO	0.500
Na2O	0.900
TiO2	0.100
Al2O3	12.700
SiO2	76.500
Fe2O3	0.500

Volatiles

LOI

2.800

Links to Other Materials

PV Clay - Related
Cache

Miscellaneous

Family: Feldspar
Region: North America
Mined At: Unspecified
Raw Mineral: No
Generic: No

Notes

See PV Clay.

(Richard Willis)

A California feldspathic earth, usually packaged under the label PVC for “Plastic Vitrox Clay”, that is similar in makeup to Cornwall Stone but fires whiter. It is preferred by many for use in white clay or glaze formulas where kaolin or a “white clay” is called for.
Typical empirical analyses are SiO₂ 75.56%, Al₂O₃ 14.87%, Fe₂O₃ 0.09%, CaO 0.22%, MgO 0.20%, Na₂O 0.29%, K₂O 6.81% and CaO 1.00%, K₂O 5.00%, MgO 0.50%, Na₂O 0.90%, TiO₂ 0.10%, Al_2
>O₃ 12.70%, SiO₂ 76.50%, Fe₂O₃ 0.50%
A well-behaved casting slip for cone 8 or lower can be made of 1 part PV to 3 parts talc and 2 parts ball clay. A simple cone 6 glaze can be made of 1 part PV to 1 part borocalcite (2CaO.3B₂O₃_.5H₂O).

Authors

Tony Hansen (Owner)

XML

<?xml version="1.0" encoding="UTF-8"?>
<material name="Plastic Vitrox" descrip="White Burning Plastic Feldspar" generic="0" rawmineral="0" searchkey="PV Clay, Plas Vitrox" loi="2.80">
<families>
<family name="Feldspar"/>
</families>
<regions>
<region name="North America"/>
</regions>
<oxides>
<oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="1.000" tolerance=""/>
<oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.500" tolerance=""/>
<oxide symbol="K2O" name="Potassium Oxide" status="" percent="5.000" tolerance=""/>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.900" tolerance=""/>
<oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.100" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="12.700" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="76.500" tolerance=""/>
<oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="0.500" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="2.800" tolerance=""/>
</volatiles>
<references>
<reference name="seealso" reason=""/>
</references>
<notes>
<note>See PV Clay.</note>
<note>A California feldspathic earth, usually packaged under the label PVC for &#147;Plastic Vitrox Clay&#148;, that is similar in makeup to Cornwall Stone but fires whiter. It is preferred by many for use in white clay or glaze formulas where kaolin or a &#147;white clay&#148; is called for.
Typical empirical analyses are SiO2 75.56%, Al2O3 14.87%, Fe2O3 0.09%, CaO 0.22%, MgO 0.20%, Na2O 0.29%, K2O 6.81% and CaO 1.00%, K2O 5.00%, MgO 0.50%, Na2O 0.90%, TiO2 0.10%, Al2O3 12.70%, SiO2 76.50%, Fe2O3 0.50%
A well-behaved casting slip for cone 8 or lower can be made of 1 part PV to 3 parts talc and 2 parts ball clay. A simple cone 6 glaze can be made of 1 part PV to 1 part borocalcite (2CaO.3B2O3.5H2O).

</note>
</notes>
</material>

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