•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com

Sign-up at https://insight-live.com today.


Formula: Al2O3.SiO2
Alternate Names: Chiastolite

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.


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>

Feedback, Suggestions

Your email address


Your Name


Copyright 2003, 2008, 2015 https://digitalfire.com, All Rights Reserved