Examples from the Web for fluorite
In England, fluorite is obtained in this manner as a by-product from lead and zinc mines.The Economic Aspect of Geology|C. K. Leith
Rays passing through the fluorite window strike the blackened side of the mica, which is parallel and opposite to it.Inventors at Work|George Iles
Only certain varieties of fluorite show the phenomenon well.
Fluorite is widely distributed, most commonly in vein deposits, often associated with metallic ores.Geology|William J. Miller
Some specimens of fluorite (CaF2) show the phenomenon especially well, whence the name fluorescence.