Definition of taconite in English:

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Pronunciation: /ˈtakəˌnīt/


A low-grade iron ore consisting largely of chert, occurring in the US chiefly around Lake Superior.
Example sentences
  • She was loaded with 26,000 tons of taconite at Superior, WI, on Nov.9, 1975 and left the port of Duluth-Superior, at the western end of Lake Superior shortly after 2: 00 p.m. in fair weather but with a foul forecast lying in wait.
  • The Mesabi Iron Range contains some 110 miles of small towns built at the turn of the last century along a seam of iron ore called taconite.
  • An increasingly important source of iron for commercial uses is taconite, a mixture of hematite and silica.


Early 20th century: from the name of the Taconic Mountains (in southeastern New York State, western Massachusetts, and southwestern Vermont) + -ite1.

For editors and proofreaders

Syllabification: tac·o·nite

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