Definition

Noun: 1. A hard, fine-grained sedimentary rock: Taconite is a specific type of iron-bearing rock, a variety of chert, that contains significant amounts of magnetite and hematite, which are iron oxide minerals. 2. A low-grade iron ore: Due to its iron content, taconite is mined and processed to extract iron. It is considered a low-grade ore because the iron must be separated from the surrounding rock, requiring extensive processing compared to higher-grade ores.

Usage Examples

• Noun:
  • The Mesabi Range in Minnesota is a major source of taconite.
  • Processing taconite into usable iron pellets is an energy-intensive operation.
  • The discovery of efficient methods to process taconite revitalized the regional iron mining industry.

Advanced Usage

• Industrial and Economic Context: The term is primarily used in geology, mining, and industrial manufacturing contexts. It often appears in discussions about natural resources, steel production, and regional economies dependent on mining.
  • The taconite industry is a cornerstone of the state's economy.

Variants and Related Words

• Taconite Pellets (noun phrase): The final product after processing taconite rock. The iron-rich material is concentrated and formed into small, hard balls for efficient transport and smelting.
  • Freighters on the Great Lakes carry millions of tons of taconite pellets to steel mills.

Synonyms

• Iron-bearing rock
• Low-grade iron ore
• Ferruginous chert (technical)

Different Meanings

This word has a highly specific, technical meaning and is not commonly used in a figurative or idiomatic sense. Its definition is consistent across contexts related to geology and mining.

Noun

1. a variety of chert containing magnetite and hematite; mined as a low-grade iron ore