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Andalusite

Formula: Al2O3.SiO2
Alternate Names: Chiastolite

OxideAnalysisFormula
Al2O362.90%1.000
SiO237.10%1.001
Oxide Weight162.16
Formula Weight162.16
If this formula is not unified correctly please contact us.

As a member of the alumino-silicate family, it has the same chemistry as sillimanite and kyanite but differs in crystalline structure. Andalusite is volume-stable at elevated temperatures and achieves a slight permanent expansion of about 1.5% at around 2730F. The andalusite deposit in Hillsboro, NC is very clean with low iron and alkali impurities.

The Pyrofrac series of andalusite phyrophyllite materials are beneficeated to maximize the available andalusite.


Mechanisms

Andalusite Cross In Rock

Out Bound Links

In Bound Links


By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Andalusite" descrip="" searchkey="Chiastolite" loi="0.00" casnumber="12269-78-2"> <oxides> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="62.900" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="37.100" tolerance=""/> </oxides> </material>


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