Fluorite is also named fluorspar, it is a common halide mineral, it is a compound, which was composed of calcium fluoride, and it is an important extraction fluoride mineral. There are many colors of fluorite; It is also a transparent and colorless. Transparent and colorless fluorite can be used to create special optical lens. Fluorite has many uses, such as steel, aluminum production of flux, used to make milk white glass, ceramic products, high-octane fuel produced as the catalyst and so on. Fluorite generally is grainy or blocky, with glass gloss, green or purple as much. Fluorite in the ultraviolet or cathode rays often issued the blue-green fluorescence, and its name is from the basis of this feature. Before the artificial fluorite technology is not mature, it is one of the materials used in manufacturing optical glass lens.
Chemical composition: CaF2, Ca: 51.1%, F: 48.9%.
Crystal structure: Unit cell is face centered cubic structure; Each unit cell contains four calcium ions and eight fluorine ions.
Crystalline state: Crystalline body Crystal system: Isometric crystal system Crystal Habits: Often has cube, octahedron, rhombic dodecahedron and the poly-shaped, but also was banded dense massive collection.
Common colors: Green, blue, brown, yellow, pink, purple, colorless and so on. Luster: From glassy to second glassy. Cleavage: Four complete cleavage. Mohs hardness: 4. Density: 3.18( + 0.07, - 0.18)g/cm 3. Optical characteristics: Homogeneous body. Pleochroism: None. Refractive index: 1.434 (± 0.001). Birefringence: None.
UV fluorescence: Varies with different species, usually with strong fluorescence can be a phosphor. Absorption spectrum: No features, changes, generally strong absorption. Zoom check: Ribbon, two-phase or three-phase inclusions can view triangular development management. Special optical effects: Color effects.