fluorspar
Noun: A soft, colorful mineral composed of calcium fluoride (CaF₂). It is known for its vibrant colors, which can range from purple and blue to green, yellow, or colorless. Fluorspar exhibits the property of fluorescence, meaning it can glow under ultraviolet light. It is the primary commercial source of fluorine and its compounds.
Fluorspar is primarily used as an industrial mineral. Its main applications are in metallurgy as a flux to lower the melting point of raw materials, and in the chemical industry for producing hydrofluoric acid, a key precursor for many fluorine-containing products.
- The geologist identified the purple veins in the rock as fluorspar.
- Fluorspar is essential in the production of aluminum and steel.
- Under a UV lamp, the specimen of fluorspar emitted a soft blue glow.
- "Optical-grade fluorspar": Refers to high-purity, transparent crystals of calcium fluoride used to make lenses and windows for specialized optical equipment due to its low dispersion.
- In a historical or collecting context, the term "fluorite" is often preferred, especially for well-formed crystals prized by mineral collectors.
- Fluorite: This is the more common mineralogical name for the same calcium fluoride mineral. "Fluorite" is often used in scientific and collecting contexts, while "fluorspar" is typically used in industrial and commercial contexts.
- Calcium fluoride: The chemical name for the compound that constitutes fluorspar/fluorite.
- Fluorite
- Calcium fluoride (in its mineral form)
While fluorspar and fluorite refer to the same mineral (CaF₂), there is a subtle contextual difference: * Fluorspar emphasizes the mineral's economic and industrial role as an ore. * Fluorite emphasizes the mineral's properties as a natural crystalline solid, often highlighting its crystal forms, colors, and fluorescence.
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a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine
