The 'Iron Age'

Our Kumba Iron Ore business operates three mines in South Africa, including Sishen, one of the largest open-pit mines in the world at 11 kilometres long, 1.5 kilometres wide and 400 metres deep. It produces some of the world's finest-grade iron ore with a high level of iron content in the rock relative to impurities.

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Iron Mining History

Minnesota has the largest deposits of iron ore in the United States, and northern Minnesota has been mining iron ore for 130 years (26 years after Minnesota became a state in 1858). The majority of iron mined is used to make steel which has been used to build infrastructure, appliances, vehicles, and so many other things that make our modern ...

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Origin of high-grade iron ores at the thabazimbi deposit, South …

T1 - Origin of high-grade iron ores at the thabazimbi deposit, South Africa. AU - Gutzmer, J. AU - Beukes, N. J. AU - De Kock, M. O. AU - Netshiozwi, S. T. PY - 2005. ... AB - The Thabazimbi iron ore deposit comprises a series of stratabound orebodies, on average 18 - 25 m thick that are aligned along the faulted basal contact between the Penge ...

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Banded Iron Formation-Related High-Grade Iron Ore

The spark to put together this volume on banded iron formation (BIF)-related high-grade iron ore was born in 2005 during a steamy night in Carajás where the iron research group from the Universidade Federal Minas Gerais, Vale geologists, Carlos Rosière and Steffen Hagemann, were hotly debating the hypogene alteration genesis for the high-grade, jaspilite …

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Iron Ore

Iron Ore is a plot item in Dragon Age: Origins - Awakening. Found in the Trade Quarter of Kal'Hirol, at the "Forge". It can be used on the Elemental Requirements side quest.

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Hematite | Definition, Uses, & Facts | Britannica

hematite, heavy and relatively hard oxide mineral, ferric oxide (Fe 2 O 3), that constitutes the most important iron ore because of its high iron content (70 percent) and its abundance. Its name is derived from the Greek word for "blood," in allusion to its red colour. Many of the various forms of hematite have separate names. The steel-gray crystals and coarse …

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History of the Iron Ore Trade : The Cleveland Memory …

Iron ore was discovered on the Marquette Range on September 19, 1844 by William A. Burt, United States Deputy Surveyor, and party who were surveying in the Upper Peninsula of Michigan.

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Mineralogy, geochemistry and origin of Mn in the high-Mn iron …

origin of iron ores in general. 2. Geology and stratigraphy of the iron ores. ... The iron ore beds are generally capped. by an alluvial cover and/or quartzites of approximately 50 cm in.

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A Proposed Hypogenic Origin of Iron Ore Deposits in Southeast …

A Proposed Hypogenic Origin of Iron Ore Deposits in Southeast Minnesota Karst. From 1942 through 1968 there was an active iron ore mining industry in western Fillmore, eastern Mower and southern Olmsted Counties of Minnesota. This iron mining district was 250 miles south of, and the ores were a billion years younger than, the ores of the ...

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Iron Ore

History Talk (0) < back to | Ores Iron Ore: Iron Ore Ore such as hematite that contains iron. It also been used for jewelry since ancient times. Acquisition: Collection . R5 Western Europe: West Tunis, Byrsa Hill; Southeast Asia: Himalayan Region _ price ...

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Iron Ore Price

Iron Ore increased 3.58 USD/MT or 3.46% since the beginning of 2025, according to trading on a contract for difference (CFD) that tracks the benchmark market for this commodity. Iron Ore - values, historical data, forecasts and news - updated on February of 2025.

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Iron (Element)

History and properties of iron. Archeologists estimate that people have been using iron for more than 5,000 years, according to Jefferson Lab. In …

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Origin of high-grade iron ores at the thabazimbi deposit, South Africa

The Thabazimbi iron ore deposit comprises a series of stratabound orebodies, on average 18 - 25 m thick that are aligned along the faulted basal contact between the Penge Iron Formation and ...

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Iron (Fe) Ore | Minerals, Occurrence » Geology Science

Iron ore can occur in different geological formations, including banded iron formations, sedimentary iron ore deposits, and magmatic-hydrothermal iron ore deposits. Types of iron ore deposits: Iron ore deposits …

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18 Facts About Iron Ore

Iron Ore has a Rich Geological History. Iron ore has a rich geological history, with its formation dating back millions of years. Understanding its geological origins is essential for locating and extracting viable deposits. Iron Ore is a Pillar of Industrial Civilization.

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Iron processing | Definition, History, Steps, Uses, & Facts

Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a relatively dense metal with a silvery white appearance and distinctive

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What is Iron Ore?

Iron ore is used to extract metallic iron which has a wide variety of applications in the industrial realm. Records of the use of iron as an important metal for making tools and other objects of utility by humans have been dated …

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Insight into the Origin of Iron Ore Based on Elemental Contents of

The origin of iron ore from these BIFs was investigated using a combination of in-situ magnetite and whole-rock chemistry. The studied BIF ore samples have a narrow range of TFe between 30.90 wt.% and 43.20 wt.%, indicating a low-grade ore. The geochemical signatures of magnetite such as low contents of base metals (e.g., Cu, Co, V, and Zn) and ...

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Origin of iron ore by diagenetic replacement of calcareous oolite

MANY non-uniformitarian1 or quantitatively improbable2 hypotheses have been offered to explain the origins of extensive sedimentary rocks rich in iron. Ironstones and iron formations3, here termed ...

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Iron Ore: Sedimentary Rock

The iron ore deposits began forming when the first organisms capable of photosynthesis began releasing oxygen into the waters. This oxygen immediately combined with the abundant dissolved iron to produce hematite or magnetite. …

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Origin and evolution of large Precambrian iron formations

Iron oxide compounds have naturally formed during the whole of Earth's history. Synthetic compositions with iron oxides are produced with the use of various techniques and widely used for ...

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genesis of these important ore bodies in Northern New York …

The Mineville district produced two distinct varieties of iron ore (Birkinbine 1890): magnetite-apatite and magnetite-silicate ore. The magnetite-apatite ore was produced from what was called the "Old Bed" and the magnetite-silicate ore came from the "New Bed". These names were applied to the ore mined from different mining works.

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THE ORIGIN OF SEDI:MENTARY IRON FORMATIONS: …

explanation of the origin of the large sedimentary iron ore de­ posits-for example, tho e of the Lake Superior region, especially the Me abi Range. The source of the iron is as yet uncertain, as are the means by which the iron is dissolved and transported. The mo t probable hypothe i i that the iron oi the iron-bearing

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Banded Iron Formation

BIF and Iron Ore. Apart from being an important proxy for Precambrian seawater composition, BIFs are the main source of metallic iron for the steel industry. ... Lascelles D (2006) The Mount Gibson banded iron formation-hosted magnetite deposit: two distinct processes for the origin of high-grade iron ore. Econ Geol 101:651–666.

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Where Does Iron Come From Or How Is It Made?

Iron (abbreviated Fe) on Earth is made from iron ore, which contains the element iron along with varying amounts of rock. Iron is the primary element in the manufacture of steel. The element iron itself comes from supernovae, which represent the violent explosive deaths of faraway stars. ... When you ponder the origin of iron, your mind likely ...

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History of Iron

According to present knowledge, iron was first smelted in eastern Asia Minor and northern Mesopotamia around 2000 -1500 B.S. and in the plains north of the Caucasus as well.

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Origin of sedimentary hosted high-grade iron ore deposits

Genesis of high-grade iron ore deposits • Supergene (iron ore) deposit: Mineral deposit or enrichment formed near to or at the surface, commonly by descending groundwater (supergene fluids) • Hypogene (iron ore) deposit: Mineral deposit formed below the surface, usually associated with mostly ascending, "warm"

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Brief History of Birmingham, Alabama Iron Ore Mining

Iron ore mining in the Birmingham District followed the ups and downs of iron and steel production. Active mining stopped in 1975. After that, cheaper imported ores were used until the iron and steel industry was mostly shut down. It is estimated that from 1840 to 1975, 375 million short tons of iron ore were produced in the Birmingham District.

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The origin of the iron ore deposits in the Bull Valley and Iron …

A summary of the geology of the Bull Valley district, southwestern Utah, and a description of the occurrence of the magnetite and hematite deposits is given, as well as brief descriptions of the ore pits at Iron Mountain and Desert Mound 20 miles to the northeast, in which deposits formed under similar geologic conditions have been developed. Neither the ores nor the country rock show …

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Iron

Commodity Iron is a brittle, steel gray to silvery gray metal used through millennia. Advent of its use was so significant that the Iron Age of human prehistory is named for the dominant use of the metal. Iron has had numerous names throughout human history. Our current name for the metal is likely from Middle English and was itself derived from Proto-Germanic …

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