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        Firefly stone

        Detail:


        Fluorite is also called the fluorspar. Is one of the more common in nature a kind of mineral, with a variety of other mineral paragenesis, world more were made, there are five varieties effectively. Cubic system, main component is calcium fluoride (CaF ?). Crystallization of octahedral and cube. Crystal is glass luster, bright color and changeful, very brittle, mohs hardness is 4, melting point 1360 ℃, a complete cleavage properties. Part of the sample in the circumstance of friction, heat and uv radiation may shine.


        The mineral from volcanic magma, in the process of magma cools, was separated gas aqueous solution containing fluorine, lava in the process of solution along the fissures, air fluoride ion in aqueous solution combined with calcium ions in the surrounding rocks, forming calcium fluoride, namely formed fluorite after cooling crystallization. Exists in granite and pegmatite, syenite rock.


        Because of very brittle soft is often used as gems. In the industry, fluorite is the main source of fluorine can extract preparation of fluorine element and its various compounds, related to the downstream steel enterprises. And the color is gorgeous, crystal morphology and beautiful specimens of fluorite can be used for the collection, decoration and carving crafts.

         


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