Fluorite

CaF₂

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The reference mineral for hardness 4 on the Mohs scale, fluorite is a calcium fluoride (CaF2) celebrated for its wide spectrum of colors, whether purple, blue, green, yellow, pink, or colorless. It crystallizes in the cubic system, most often as cubes or octahedra, with a vitreous luster, a white streak, and perfect octahedral cleavage. Its specific gravity ranges from 3.13 to 3.18. Many specimens glow strongly under ultraviolet light, and the phenomenon of fluorescence was in fact named after this mineral. Fluorite serves as a flux in metallurgy and as a source of fluorine compounds. A specific gravity near 3.15 and only moderate hardness set it apart from the harder, denser minerals it accompanies in veins.

불화칼슘 광물로, 다양한 색상으로 나타나며 광학적으로 중요하다.

결정계	Cubic (Isometric)
광물 분류	03 Halides
모스 경도	4.0
비중	3.13-3.18
색상	Purple, blue, green, yellow, colorless, pink
광택	Vitreous
조흔색	White
벽개	Perfect octahedral {111}
단구	Conchoidal
투명도	Transparent
결정 습성	Cubic, octahedral