Sillimanite meaning

sĭlə-mə-nīt
A usually white, hard mineral, Al2 SiO5 , occurring in highly metamorphosed rock as long, slender, fibrous crystals.
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A very hard, mineral, aluminum silicate, Al2SiO5, usually found in metamorphic rock as long, slender crystals of various colors.
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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.
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(mineralogy) A fibrous neosilicate mineral, polymorphic with andalusite and kyanite, with the chemical formula Al2SiO5.
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Origin of sillimanite

  • After Benjamin Silliman

    From American Heritage Dictionary of the English Language, 5th Edition

  • Named after American chemist and geologist Benjamin Silliman (1779-1864) in 1824.

    From Wiktionary