Definition

1. Noun:
   • A widely occurring iron oxide ore: "limonite" is a naturally occurring mineral that serves as an important source of iron. It is not a single mineral but a mixture, primarily composed of hydrated iron oxides.
   • A mixture of goethite, hematite, and lepidocrocite: Chemically, "limonite" is a term used for an amorphous or poorly crystalline aggregate of minerals, most commonly goethite, along with hematite and lepidocrocite.

Usage Examples

• Noun:
  • The geologist identified the yellow-brown deposit as limonite.
  • Limonite is often found in bogs and marshes, giving them a characteristic rusty color.

Advanced Usage

• "Bog iron ore": A common name for limonite deposits formed in wetland environments.
  • Early settlers in the region extracted bog iron ore (limonite) to produce tools.

Variants and Related Words

• Goethite (n): A specific iron oxyhydroxide mineral that is a major component of limonite.
  • Under the microscope, the limonite sample showed fine needles of goethite.
• Hematite (n): An iron oxide mineral (Fe₂O₃) that can be a component of some limonite mixtures.
• Lepidocrocite (n): Another iron oxide-hydroxide mineral sometimes found in limonite.

Synonyms

• Brown iron ore: A descriptive synonym highlighting its common color.
• Bog iron: A synonym emphasizing a typical environment where it forms.

Related Terms

• Ochre (n): A natural earth pigment containing iron oxide, often derived from minerals like limonite.
  • The artist used a yellow ochre made from finely ground limonite.

Noun

1. a widely occurring iron oxide ore; a mixture of goethite and hematite and lepidocrocite