Glow in the dark rock

Glow in the dark rock is a kind of common ore called "fluorite", an industrial raw material that is not rare, and the main ingredient is calcium fluoride, which is a chemical raw material for the production of hydrofluoric acid. The pearl of the night is crystal to be processed into a certain shape to have some difficulty, but the processing cost is also not big. The main material of the pearl is fluorite, calcite and some diamonds, among which fluorite is the most common.

In physics, glow in the dark luminous principle of rock is made by the stone with a phosphorescent material sunshine, absorb the foreign energy, then the energy released in the dark, forming the brilliance of silver; This is closely related to trace impurities in mineral crystals.