andalusite

[ an-dl-oo-sahyt ]
/ ˌæn dlˈu saɪt /

noun Mineralogy.

an orthorhombic form of aluminum silicate, Al2SiO5, found in schistose rocks.

Origin of andalusite

1830–40; named after Andalusia, where it was first found; see -ite1

Words nearby andalusite

and the like, and then some, and thereby hangs a tale, and/or, andalusia, andalusite, andaman, andaman and nicobar islands, andaman islands, andaman sea, andamanese

Example sentences from the Web for andalusite

British Dictionary definitions for andalusite

andalusite
/ (ˌændəˈluːsaɪt) /

noun

a grey, pink, or brown hard mineral consisting of aluminium silicate in orthorhombic crystalline form. It occurs in metamorphic rocks and is used as a refractory and as a gemstone. Formula: Al 2 SiO 5

Scientific definitions for andalusite

andalusite
[ ăn′də-lōō′sīt′ ]

A hard, grayish white to pinkish brown orthorhombic mineral. Andalusite occurs as nearly square prisms, often with cross-shaped cross sections, in metamorphic rocks. It is a polymorph of kyanite and sillimanite, but forms at shallower depths than they do, and at higher temperatures than kyanite and lower temperatures than sillimanite. Chemical formula: Al2SiO5.