'Fluor spar' definitions:
Definition of 'fluor spar'
From: GCIDE
- Fluorite \Flu"or*ite\, n. (Min.) Calcium fluoride (CaF2), a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called {fluor spar}, or simply fluor. [1913 Webster]