Definition

1. Noun:
   • A clay-like mineral: Bauxite is a naturally occurring, heterogeneous material that typically has a reddish-brown color and an earthy appearance.
   • The chief ore of aluminum: It is the primary source from which aluminum metal is commercially extracted.
   • Composition: It is composed mainly of aluminum oxides and aluminum hydroxides, such as gibbsite (Al(OH)₃), boehmite (γ-AlO(OH)), and diaspore (α-AlO(OH)).
   • Industrial uses: Beyond aluminum production, bauxite is used as an abrasive material and as a catalyst in various chemical processes.

Examples of Usage

• Noun:
  • The country's economy relies heavily on the export of bauxite.
  • Aluminum is produced by refining bauxite in a complex industrial process.
  • This region has vast deposits of high-grade bauxite.

Advanced Usage

• "Bauxite mining": The process of extracting bauxite ore from the earth.
  • Bauxite mining can have significant environmental impacts if not managed responsibly.
• "Bauxite residue" (or "red mud"): The insoluble waste product left after alumina extraction.
  • Finding safe uses for bauxite residue is a major challenge for the aluminum industry.

Variants and Related Words

• Alumina (n): Aluminum oxide (Al₂O₃), the intermediate compound extracted from bauxite during the refining process.
  • Alumina is smelted to produce pure aluminum metal.
• Laterite (n): A soil and rock type rich in iron and aluminum, often associated with bauxite deposits in tropical regions.

Synonyms

• Aluminum ore: A general term for rocks containing aluminum minerals, with bauxite being the most important.
• Aluminous clay: A descriptive term highlighting its clay-like properties and aluminum content.

Related Phrases

(Note: As a specific mineral name, "bauxite" does not commonly form phrasal verbs or idioms. Its usage is primarily technical and industrial.)

Noun

1. a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst