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staurolite

[stawr-uh-lahyt]
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noun
  1. a mineral, basic iron aluminum silicate, Fe2Al2O7(SiO4)4(OH), occurring in brown to black prismatic crystals, which are often twinned in the form of a cross.
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Origin of staurolite

1790–1800; < Greek stauró(s) a cross + -lite
Related formsstau·ro·lit·ic [stawr-uh-lit-ik] /ˌstɔr əˈlɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for staurolite

Historical Examples

  • Kyanite and staurolite may also be mentioned as occasionally occurring.

    Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2

    Various

British Dictionary definitions for staurolite

staurolite

noun
  1. a brown glassy mineral consisting of iron aluminium silicate in the form of prismatic crystals: used as a gemstone. Formula: Fe 2 Al 9 Si 4 O 11 (OH) 2
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Derived Formsstaurolitic (ˌstɔːrəˈlɪtɪk), adjective

Word Origin

C19: from Greek stauros a cross + -lite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
staurolite in Science

staurolite

[stou′rə-līt′]
  1. A brownish to black orthorhombic mineral, often having crossed intergrown crystals and found in mica schists and gneisses. Chemical formula: (FeMg)2Al9Si4O23(OH).
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.