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VanTalc

Hydrous Magnesium Calcium Silicate

OxideAnalysisFormula
CaO0.40%0.009
MgO31.00%0.989
Na2O0.10%0.002
Al2O31.00%0.013
SiO261.00%1.305
Fe2O31.30%0.010
LOI5.50
Oxide Weight121.86
Formula Weight128.95
If this formula is not unified correctly please contact us.

VANTALC talcs are high purity, platy talcs from Montana. A wide range of particle sizes are available from VANTALC 2000 to 4500.
This talc has been recommended as a substitute for NYTal Talc which is no longer available. The chemistry of the two talcs is quite different, especially for CaO. VanTalc is much closer to the chemistry of theoretical talc, actually it is incredibly close, having almost no CaO whereas NYTalc had 8%. However NyTalc had much lower iron than VanTalc.


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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="VanTalc" descrip="Hydrous Magnesium Calcium Silicate" searchkey="" loi="0.00" casnumber=""> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.400" tolerance="0.1"/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="31.000" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.100" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="1.000" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="61.000" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.300" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="5.500" tolerance=""/> </volatiles> </material>


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