Definition

Noun: 1. A white crystalline mineral: Gibbsite is a specific mineral composed primarily of aluminum hydroxide (Al(OH)₃). 2. A source of alumina: It is an important industrial ore, serving as a primary source for the production of alumina (aluminum oxide, Al₂O₃). 3. A constituent of bauxite: Gibbsite is one of the main mineral components found in bauxite, the principal ore of aluminum.

Examples

• As a mineral:
  • Gibbsite often forms in weathered, aluminum-rich soils.
  • The sample contained well-defined crystals of gibbsite.
• As an industrial material:
  • The refinery processes bauxite to extract gibbsite for alumina production.
  • High-purity gibbsite is essential for manufacturing certain ceramics.

Advanced Usage

• In mineralogy and geology: The term is used precisely to describe a specific mineral phase with a defined crystal structure and chemical composition. Its presence or absence can indicate specific environmental conditions during rock formation.
  • The paragenesis of the deposit includes kaolinite, goethite, and gibbsite.

Variants and Related Words

• Gibbsitic (adj): Relating to or containing gibbsite.
  • The gibbsitic layer was identified through X-ray diffraction.

Synonyms

• Hydrargillite (a less common synonym in older mineralogical texts).
• Aluminum hydroxide mineral (a descriptive term, not a proper mineral name).

Notes on Meaning

This word has a highly specialized, technical meaning. It is almost exclusively used in the fields of mineralogy, geology, and industrial metallurgy. It does not have common idiomatic expressions or phrasal verbs associated with it.

Noun

1. white crystalline mineral consisting of aluminum hydroxide; a constituent of bauxite and a source of alumina