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Understanding Iron Ore: A Quiz on Composition and Production

Test your knowledge on iron ore, its composition, and global production with this engaging quiz.

#Iron Ore #Mining #Geology #Minerals #Natural Resources

1 Occasionally ________ and ultrapotassic igneous rocks segregate magnetite crystals and form masses of magnetite suitable for economic concentration.

2 The world's largest producer of iron ore is the Brazilian mining corporation Vale, followed by Anglo-Australian companies ________ and Rio Tinto Group.

3 Small amounts of ________ (Al) are present in many ores (often as clay) and some limestone.

4 ________ (P) has four major effects on iron: increased hardness and strength, lower solidus temperature, increased fluidity, and cold shortness.

5 The total recoverable reserves of iron ore in ________ are about 9,602 million tones of hematite and 3,408 million tones of magnetite.

6 Banded iron formations (BIF) are metamorphosed sedimentary rocks composed predominantly of thinly bedded iron minerals and silica (as ________).

7 Metallic iron is virtually unknown on the surface of the Earth except as iron-nickel alloys from ________ and very rare forms of deep mantle xenoliths.

8 Iron ores consists of ________ and iron atoms bonded together into molecules.

9 ________ iron ore deposits are currently exploited on all continents, with the largest intensity in South America, Australia and Asia.

10 A few iron ore deposits, notably in ________, are formed from volcanic flows containing significant accumulations of magnetite phenocrysts.

💡 Interesting Facts

  • the Mauritania Railway transports iron ore on trains up to three kilometers long.
  • the Cleveland Cliffs ore dock (pictured, similar one at Ashland, Wisconsin) at Marquette, Michigan has been used to ship over 400 million tons of iron ore in the over 95 years since it was built.
  • the ancient opencast iron ore workings known as scowles (pictured) in the Forest of Dean, England, are believed to have been an inspiration for settings in J. R. R. Tolkien's Lord of the Rings.
  • the Kryvbas economic region in Ukraine is one of the largest iron ore and steel industry centers in Europe.
  • the Hull-Rust-Mahoning Open Pit Iron Mine, the largest open pit iron mine in the world, is so large that the nearby town of Hibbing, Minnesota was relocated in 1919 to allow more iron ore to be mined.
  • Jack E. Anderson's 300,000 pound sculpture Iron Man was a not only a tribute to iron ore miners, but is also the third largest statue in the United States.
  • although the Ironton Railroad was built to haul iron ore, it was used to deliver deer and buffalo to the Trexler Game Preserve in 1911.
  • the English Canal was a partially completed canal project started in 1864 that would connect the iron ore fields in northern Sweden with the Gulf of Bothnia.
  • Bristol, Quebec, had Canada's first horse-drawn railroad and Quebec's first iron ore pelletizing plant.
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