Question

What is the chemical formula of Fluorspar?

Answer 1

Ore is a type of natural rock or silt that includes one or more precious minerals, usually metals, that may be mined, processed, and sold for profit. Mining extracts ore from the earth, which is then processed or refined, usually by smelting, to remove the precious metals or minerals. The concentration of the desired ingredient in an ore is determined by its grade. To establish if a rock is of sufficiently high quality to be worth mining and thus termed an ore, the value of the metals or minerals it contains must be balanced against the cost of extraction.

Complete answer:
Fluorite (sometimes known as fluorspar) is a calcium fluoride ( $Ca{{F}_{2}}$ ) mineral. It's a kind of halide mineral. Although isometric cubic crystallisation is frequent, octahedral and more complicated isometric forms are also common. Fluorite is defined as value 4 on the Mohs scale of mineral hardness, which is based on scratch hardness comparison.
Fluorite is transparent in visible and ultraviolet light when it is pure, but imperfections turn it into a multi-colored mineral with decorative and lapidary applications. Fluorite is employed as a smelting flux and in the manufacture of some glasses and enamels in industry.
Fluorite is a source of fluoride for the production of hydrofluoric acid, which is the intermediate source of most fluorine-containing fine compounds. Because optically clear translucent fluorite lenses have low dispersion, they have less chromatic aberration and are useful in microscopes and telescopes. Fluorite optics can also be used in the ultraviolet and mid-infrared regions, when regular glasses are too opaque.

Note:
Fluorite may be coloured with elemental impurities since it is allochromatic. Fluorite is known as "the most colourful mineral in the world" because of its vast spectrum of hues. Fluorite samples come in every hue of the rainbow in varying tints, as well as white, black, and transparent crystals. Purple, blue, green, yellow, and colourless are the most frequent hues. Pink, red, white, brown, and black are less frequent. Color zoning or banding is rather frequent. Impurities, radiation exposure, and the absence of colour centre voids all influence the fluorite's hue.