sillimanite
[ sil-uh-muh-nahyt ]
/ ˈsɪl ə məˌnaɪt /
noun
a mineral, aluminum silicate, Al2SiO5, occurring in the form of long, slender, and often fibrous crystals.
Also called
fibrolite.
Words nearby sillimanite
sillanpää,
sillcock,
siller,
sillery,
silliman,
sillimanite,
sillitoe,
sills,
silly,
silly billy,
silly putty
Example sentences from the Web for sillimanite
Sillimanite usually forms exceedingly minute needles embedded in quartz.
British Dictionary definitions for sillimanite
sillimanite
/ (ˈsɪlɪməˌnaɪt) /
noun
a white, brown, or green fibrous mineral that consists of aluminium silicate in orthorhombic crystalline form and occurs in metamorphic rocks. Formula: Al 2 SiO 5
Word Origin for sillimanite
C19: named after Benjamin
Silliman (1779–1864), US chemist
Scientific definitions for sillimanite
sillimanite
[ sĭl′ə-mə-nīt′ ]
A usually white, pale-green or brown orthorhombic mineral occurring as long, slender, fibrous crystals in metamorphic rocks. It is a polymorph of andalusite and kyanite, but can form at higher temperatures than either of these. Chemical formula: Al2SiO5.