staurolite

[stawr-uh-lahyt]

noun

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.

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. 2019

Examples from the Web for staurolite

Historical Examples of staurolite

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

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

Derived Formsstaurolitic (ˌstɔːrəˈlɪtɪk), adjective

Word Origin for staurolite

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′]

A brownish to black orthorhombic mineral, often having crossed intergrown crystals and found in mica schists and gneisses. Chemical formula: (FeMg)2Al9Si4O23(OH).