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taconite

 - 2 dictionary results

tac⋅o⋅nite

[tak-uh-nahyt]
–noun
a low-grade iron ore, containing about 27 percent iron and 51 percent silica, found as a hard rock formation in the Lake Superior region.

Origin:
1890–95, Americanism; named after the Taconic mountain range (east of the Hudson River); see -ite 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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tac·o·nite   (tāk'ə-nīt')   
n.  A variety of chert containing magnetite and hematite, mined as an iron ore.

[After the Taconic (Mountains).]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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