Sentence Examples


  • Fluere, "to flow," recall the fact that the spar is useful as a flux in certain metallurgical operations.
  • Name Flussspat or Fluss.) Fluor-spar crystallizes in the cubic system, commonly in cubes, either alone or combined with the octahedron, rhombic dodecahedron, four-faced cube, &c. The four-faced cube has been called the fluoroid.
  • Fluor-spar, though cubic, sometimes exhibits weak double refraction, probably due to internal tension.
  • Many kinds of fluor-spar are thermo-luminescent, i.e.
  • Cavities containing liquid occasionally occur in crystals of fluor-spar, notably in the greasy green cubes.
 

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