Kyanite, andalusite, and sillimanite are anhydrous aluminosilicate minerals that have the same chemical formula, Al 2 SiO 5, but differ in crystal structure and physical properties.
Sillimanite. Colour: Colorless, white, yellow, brown, green, blue, gray. Lustre: Sub-Vitreous, Greasy, Silky. Hardness: 6½ - 7½. Specific Gravity: 3.23 - 3.27. Crystal System: …
The Champion Sillimanite Mine explores an andalusite rich quartz body that is enclosed in an aluminiferous schistose rock. The quartz body was formed by pneumatolic action on …
Sillimanite is a mineral that belongs to the group of aluminosilicate minerals known as the sillimanite group. It is named after the American chemist Benjamin Silliman Jr., who first described the …
Sillimanite is a rock forming mineral in a semi-pelitic gneiss where it forms fibers (sillimanite var. fibrolite) in amphibolite facies gneiss and small prismatic crystals in the …
Detailed description, properties, and locality information guide about the mineral sillimanite.
sillimanite, brown, pale green, or white glassy silicate mineral that often occurs in long, slender, needlelike crystals frequently found in fibrous aggregates. An aluminum silicate, Al 2 OSiO 4, it occurs in high …
Sillimanite. Comments: Silky massive sillimanite. Location: Khasia Hills, Assum, India. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species. Sillimanite …
