Fluorite is also called fluorite. One of the most common minerals in nature can coexist with many other minerals. There are five effective varieties in the world. In an isometric system, the main component is calcium fluoride (CaF? )。 Crystals are octahedrons and cubes. The crystal is glassy, bright and fragile, with Mohs hardness of 4 and melting point of 1360℃, and has perfect cleavage performance.
Some samples will glow under friction, heating and ultraviolet radiation. This mineral comes from volcanic magma. During the cooling process of magma, the gas-water solution separated from magma contains fluorine. When the solution rises along the fracture, fluoride ions in the gas-water solution combine with calcium ions in the surrounding rock to form calcium fluoride, and fluorite is formed after cooling and crystallization. Existing in granite, pegmatite, syenite and other rocks.
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In physics, the luminous principle of fluorite is that stones containing phosphorescent substances absorb external energy after sunlight irradiation, and then release these energy in the dark to form silvery white luster, which is closely related to trace impurities in mineral crystals.
Fluorite is not a gem at all, and its value cannot be compared with single crystal diamond, ruby, sapphire and jadeite. People always have a sense of mystery about it, because there are many legendary records in ancient books, and they will shine.
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