Also found in: Thesaurus, Encyclopedia, Wikipedia.


A variety of chert containing magnetite and hematite, mined as an iron ore.

[After the Taconic (Mountains).]


(Geological Science) a fine-grained sedimentary rock containing magnetite, haematite, and silica, which occurs in the Lake Superior region: a low-grade iron ore
[C20: named after the Taconic Mountains in New England]


(ˈtæk əˌnaɪt)

an iron-bearing chert mined as low-grade iron ore in the Mesabi Range.
[1890–95, Amer.; after the Taconic Range in New York and Massachusetts; see -ite1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.taconite - a variety of chert containing magnetite and hematite; mined as a low-grade iron ore
chert - variety of silica containing microcrystalline quartz
iron ore - an ore from which iron can be extracted
References in periodicals archive ?
The Minorca taconite service yearly makes around 3 million tons of tailored fluxed pellets for usage at ArcelorMittal flagship blast furnace at Indiana Harbor Works close to Chicago.
As our pellet inventory at both Northshore and United Taconite is adequate to meet current customer demand, we will be able to optimize our working capital and cash flow by temporarily idling production at Northshore.
Essar Steel Algoma has secured an alternate iron ore supply after Cliffs Natural Resources broke off its taconite pellet agreement with the Sault steelmaker on Oct.
Synopsis: Set amidst the whispering white pines and sun-scorched slopes of northern Wisconsin's Gogebic Range, "Taconite Creek" is the story of a young boy follows two crusty diehard fisherman to an abandoned mine on Taconite Creek.
Gogebic Taconite (GTac), a subsidiary of the Cline Group, owned by Florida coal magnate Chris Cline, has its sights set on this iron ore.
Recently reports surfaced by a scientist and Department of Natural Resources that asbestos fibers are in at least part of the ore body that Gogebic Taconite hopes to mine.
its 100%-owned Elizabeth Taconite Project, leading to an independent
Christine Goepfert, NPCA's Upper Midwest program manager, quoted in the Duluth News Tribune in response to proposed regulations for Minnesota's taconite industry designed to reduce smokestack emissions, which cause haze and lung ailments.
Attic insulation, concrete, wallboard, roofing, crayons, and potting soil, as well as tremolite-contaminated talc, taconite ore, and Sierra foothill soil, contain contaminated vermiculite or other "naturally occurring asbestos.
Processed taconite is formed into pellets, which are used to make iron, then steel.
the ores are siliceous taconite banded iron formations.
Drilling under the Burlington Northern Railroad Allouez Taconite facility, another,1800 feet; and