We offer premium quality Sillimanite that is preferred in Fire
Bricks as well as Refractory applications. Sillimanite is a
polymorph with two other minerals; kyanite and andalusite. A
polymorph is a mineral that shares the same chemistry but a
different crystal structure with another, or other, minerals.
Sillimanite is the rarest of the three trimorphs. A variety of
sillimanite is called "fibrolite". It is a common fibrous massive
form.
