chromite

Thân thiện

A geologist holds a sample of chromite in a rocky outcrop.

Definition

Noun: 1. A brownish-black mineral: Chromite is a naturally occurring mineral with a characteristic brownish-black color. 2. The major source of chromium: It is the primary commercial ore from which the metallic element chromium is extracted.

Usage

Chromite is used as a mass noun to refer to the mineral substance itself. It is typically discussed in geological, industrial, and metallurgical contexts. - Geologists identified a large deposit of chromite in the region. - The steel industry relies on chromite as a key raw material.

Examples

• The mine produces several thousand tons of chromite annually.
• Chromite is often found in association with olivine and serpentine minerals.
• The refractory properties of chromite make it useful for lining furnaces.

Advanced Usage

• Chromite sand: A foundry sand made from chromite, used in metal casting for its heat resistance.
  • The mold was created using chromite sand to withstand the high temperature of the molten metal.
• Chromite spinel: Refers to the specific crystal structure (spinel group) to which the mineral chromite belongs.
  • The sample's composition confirmed it was a chromite spinel.

Variants and Related Words

• Chromic (adjective): Relating to or containing chromium, especially in a trivalent state.
  • Chromic oxide is a green pigment.
• Chromium (noun): The chemical element (Cr) extracted from chromite.
  • Chromium is added to steel to increase hardness and corrosion resistance.

Synonyms

• Chrome ore: A common industrial synonym for chromite when referring to its role as the source of chromium.
  • The country is a leading exporter of chrome ore.

Notes on Different Meanings

The word "chromite" has a highly specific, technical meaning and is not commonly used in figurative or idiomatic expressions. Its usage is confined to its definition as a mineral and ore.

Học thuật

Noun

1. a brownish-black mineral; the major source of chromium