VIRGINIA
MULLITE™ IS VERY LOW IN IMPURITIES COMPARED TO OTHER TRADITIONALLY
SINTERED MULLITE
 Mullite rarely occurs as a mineral in nature. The word mullite
is derived from the Isle of Mull off the Scottish coast, where
the only naturally occurring deposits of mullite have ever been
found.
Mullite is a mineral with a very high melting temperature of
184 0° Centigrade. It
is a premier acidic refractory mineral; it has no polymorphic
inversions and possesses a low thermal expansion coefficient
of 5.3 x 10 -6°C. When mullite re-crystallizes in a ceramic
or a refractory it forms as small lenticular crystals which promote
high strength, even at very high temperatures.
 Virginia
Mullite™ produced by Kyanite Mining Corporation is purer
than most sintered mullite and is very volume-stable. Virginia
Mullite™ contains about 80% mullite, 11% finely dispersed
amorphous silica, 3 -6% quartz, and about 2% cristobalite.
It is also different in particle shape and impurities than mullite
formed by calcining clay minerals.
View pdf files: Mullite
Material Safety Data Sheet
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