[ stawr-uh-lahyt ]
/ ˈstɔr əˌlaɪt /


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 forms

stau·ro·lit·ic [stawr-uh-lit-ik] /ˌstɔr əˈlɪt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for staurolite

British Dictionary definitions for staurolite


/ (ˈstɔːrəˌlaɪt) /


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 Forms

staurolitic (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

Science definitions for staurolite


[ stourə-līt′ ]

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