Fluorite
CaF2
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Fluorite is known for its wide range of colors and is the reference mineral for hardness 4 on the Mohs scale. Many specimens exhibit strong fluorescence under ultraviolet light — the phenomenon was actually named after this mineral.
| Crystal System | Cubic (Isometric) |
| Mineral Class | 03 Halides |
| Mohs Hardness | 4.0 |
| Specific Gravity | 3.13-3.18 |
| Color | Purple, blue, green, yellow, colorless, pink |
| Luster | Vitreous |
| Streak | White |
| Cleavage | Perfect octahedral {111} |
| Fracture | Conchoidal |
| Transparency | Transparent |
| Crystal Habit | Cubic, octahedral |
Mohs Hardness
Mohs Hardness: 4.0 – 4.0
1 Soft10 Hard
Crystal System
Cubic (Isometric)Explore on Science FYI
Frequently Asked Questions
What is the hardness of Fluorite?
Fluorite has a Mohs hardness of 4.0.
What crystal system does Fluorite belong to?
Fluorite crystallizes in the Cubic (Isometric) crystal system.
What color is Fluorite?
Fluorite is typically Purple, blue, green, yellow, colorless, pink.
What type of luster does Fluorite have?
Fluorite exhibits a Vitreous luster.
What is the chemical formula of Fluorite?
The chemical formula of Fluorite is CaF2.