or flu·or spar
Examples from the Web for fluorspar
The centre of the fluorspar district was Rosiclare in Hardin county.
The crystals occurred in association with topaz, fluorspar and cassiterite; but they were mostly of rather pale colour.
A mixture of fluorspar and sulphuric acid is then painted over the vessel and after a few minutes the vessel is washed clean.
Those stones which show electricity on the application of pressure are such as the fluorspar, calcite, and topaz.
Fluorspar has already been mentioned as the chief natural compound of fluorine.