staurolitic


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Related to staurolitic: sillimanite

stau·ro·lite

 (stôr′ə-līt′)
n.
A brownish to black mineral, chiefly (FeMg)2Al9Si4O23(OH), often having crossed intergrown crystals and sometimes used as a gem.
[Greek stauros, cross; see stā- in Indo-European roots + -lite.]
stau′ro·lit′ic (-lĭt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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