sillimanite [sil-uh-muh-nahyt] ExamplesWord Origin noun
- a mineral, aluminum silicate, Al2SiO5, occurring in the form of long, slender, and often fibrous crystals.
Origin of sillimanite 1825–30; named after B.; see Also called . Examples from the Web for sillimanite Historical Examples of sillimanite
Sillimanite usually forms exceedingly minute needles embedded in quartz.
British Dictionary definitions for sillimanite sillimanite 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 sillimanite in Science 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.