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Fibrous Wollastonite

Formula: CaSiO3

OxideAnalysisFormula
CaO48.28%1.000
SiO251.72%1.000
Oxide Weight116.20
Formula Weight116.20
If this formula is not unified correctly please contact us.

Natural wollastonite mineral particles are long accicular crystals. These are lost during normal fine grinding. However if the parent rock is processed carefully it is possible to maintain the character of the crystal shape to produce a unique powder with unusual properties. A hand full of this powder can be squeezed slightly and turned upside down and little of it falls away!

Fibrous wollastonite can, for example, be added to clay bodies to impart significantly greater dry strength. However this normally works only for low fire bodies since the wollastonite will work as a flux at higher temperatures and it tends to contain fired speck producing particles.


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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Fibrous Wollastonite" descrip="" searchkey="" loi="0.00" casnumber="9056-30-8"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="48.280" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="51.720" tolerance=""/> </oxides> </material>


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