fluorspar

American  

[floo-awr-spahr, -er-] / ˈflu ɔrˌspɑr, -ər- /

Or fluor spar

noun

Mineralogy.

1. fluorite.

---

fluorspar British  

/ ˈflʊəˌspɑː /

noun

1. Also: fluorite.  a white or colourless mineral sometimes fluorescent and often tinted by impurities, found in veins and as deposits from hot gases. It is used in the manufacture of glass, enamel, and jewellery, and is the chief ore of fluorine. Composition: calcium fluoride. Formula: CaF 2 . Crystal structure: cubic

---

Etymology

Origin of fluorspar

First recorded in 1785–95; fluor- + spar ³

Example Sentences

One result is the fluorspar district of southern Illinois, which once produced a majority of the country’s fluorite—used to smelt steel and create hydrofluoric acid.

From Science Magazine • Jun. 1, 2023

I'm for it�but I'm disturbed about coal and fluorspar so I'm reserving my judgment on amendments.

From Time Magazine Archive

Also proposed were "import taxes" of: $3 per ton on fluorspar; 1¢ per Ib. on manganese; 22¢ per Ib. on butter; 100% on all products of convict labor.

From Time Magazine Archive

They offered 5 to 6% more than U. S. prices for Mexican antimony, copper, fluorspar, tungsten.

From Time Magazine Archive

For this use very small quantities of material imported from Japan have been used, but recently fluorspar of a grade suitable for optical purposes has been found in Illinois, Kentucky, New Hampshire, and other states.

From The Economic Aspect of Geology by Leith, C. K. (Charles Kenneth)