F L U O R I T E
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FluoriteCaF2
Class: Halide Hardness: 4 Density: 3.1 - 3.3 Streak: White Lustre: Vitreous Habit: Crystals, usually cubic Colours: Commonly colourless, blue, purple or green, but any is possible. | | Crystal System: Isometric Cleavage: Perfect octahedral Fracture: Conchoidal Magnetism: None Reaction with HCl: Unknown | Identification in hand sample: Cubic crystals, hardness and colour indicative. Associations: Common in hydrothermal mineral deposits associated with sulfides, carbonates and barite. Industrial / ecomonic uses: Main source of fluorine (which is added to drinking water, toothpaste, used as a flux in industrial uses and as part of CFCs) |