fluorspar is the trade name for the mineral fluorite, which is composed of calcium fluoride.
Der′byshire-neck, a form of the disease goitre, occurring in Derbyshire; Der′byshire-spar, a fluorspar found in Derbyshire.
fluorspar (CaFl) produces a red as intense as pure lime, and fuses into a bead.
The production of fluorspar in the United States is several times that of any other country.
The centre of the fluorspar district was Rosiclare in Hardin county.
When the experiment is performed in the fluorspar tube, the gaseous fluoride may be collected over mercury.
The chief use of fluorspar is as a flux in the manufacture of open-hearth steel.
Metallic calcium also burns in fluorine gas, forming the fused fluoride, and occasionally minute crystals of fluorspar.
The fluoride of calcium, or fluorspar, may be used for this experiment.
Examples of simple forms amongst crystallized substances are octahedra of alum and spinel and cubes of salt and fluorspar.