Taconite (/ ˈtækənaɪt /) is a variety of banded iron formation, an iron -bearing (over 15% iron) sedimentary rock, in which the iron minerals are interlayered with quartz, chert, or carbonate.

taconite, a low-grade siliceous iron ore composed of 20–30 percent magnetite that occurs in fine-grained banded iron formations. Taconite is mined primarily in the U.S., in the Mesabi Iron …

Information on mining taconite, a low grade iron ore, in Minnesota from the publication, Digging Into Minnesota's Minerals by the Minnesota Department of Natural Resources Division of …

Sep 18, 2011 · Taconite is a low-grade iron ore. Originally thought to be of little value, taconite was considered overburden (waste) in the days when high grade iron ore was mined. The iron …

Mar 20, 2025 · Cleveland-Cliffs said it is temporarily idling its Minorca mine in Virginia, Minn., as well as part of Hibbing Taconite, two of the six taconite mines on Minnesota’s Iron Range.

From blasting to crushing to separation – more than 85% of the iron mined in the United States is mined in northeastern Minnesota to make our nation’s steel. Taconite is a very hard rock. …

Nov 4, 2019 · As natural ore reserves were diminished, taconite became an alternative source of iron that allowed the Iron Range to continue mining operations in a changing global economy.

Taconite is named for the Taconic Mountains of upstate New York, and it is essentially a chert-like rock that has 30-32 percent iron content. Taconite reserves of the Mesabi Range are …

May 2, 2023 · Taconite is a low-grade iron ore found in Minnesota. They have been mined for over 100 years and when researchers at the University of Minnesota created a recipe for …

Mar 5, 2025 · Taconite is a flint-like type of rock containing low-grade iron ore. Vast reserves of taconite, with iron concentrations of 30-50%, were discovered in 1870 near present-day …