fluorspar

or flu·or spar

[floo-awr-spahr, -er-]

noun Mineralogy.

fluorite.

Origin of fluorspar

First recorded in 1785–95; fluor- + spar³

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fluorspar

Historical Examples of fluorspar

The fluoride of calcium, or fluorspar, may be used for this experiment.
A System of Instruction in the Practical Use of the Blowpipe
Anonymous
Agricola derived the name fluores from fluo "to flow," and we in turn obtain "fluorite," or "fluorspar," from Agricola.
De Re Metallica
Georgius Agricola
Der′byshire-neck, a form of the disease goitre, occurring in Derbyshire; Der′byshire-spar, a fluorspar found in Derbyshire.
Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)
Various
The production of fluorspar in the United States is several times that of any other country.
The Economic Aspect of Geology
C. K. Leith
Fluorspar is the trade name for the mineral fluorite, which is composed of calcium fluoride.
The Economic Aspect of Geology
C. K. Leith

British Dictionary definitions for fluorspar

fluorspar

fluor

noun

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: cubicAlso: (US and Canadian) fluorite

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012