taconite

[ tak-uh-nahyt ]
/ ˈtæk əˌnaɪt /

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 of taconite

1890–95, Americanism; named after the Taconic mountain range (east of the Hudson River); see -ite1

Example sentences from the Web for taconite

British Dictionary definitions for taconite

taconite
/ (ˈtækəˌnaɪt) /

noun

a fine-grained sedimentary rock containing magnetite, haematite, and silica, which occurs in the Lake Superior region: a low-grade iron ore

Word Origin for taconite

C20: named after the Taconic Mountains in New England