mineral
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)
AI-generated identification · may be incorrectHardness: 5 on Mohs scale; Color: Neon blue to deep teal; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22.
- Hardness
- 5 on Mohs scale
- Color
- Neon blue to deep teal
- Luster
- Vitreous to sub-resinous
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Physical properties
Hardness: 5 on Mohs scale; Color: Neon blue to deep teal; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22.
Formation & geological history
Formed in igneous and metamorphic environments, specifically in pegmatites and metamorphic limestone. Can be found in rocks as old as the Precambrian era.
Uses & applications
Primary source of phosphorus for chemical fertilizers. High-quality specimens are used as gemstones and in crystal healing collections.
Geological facts
Apatite is the defining mineral for number 5 on the Mohs scale of mineral hardness. Its name comes from the Greek word 'apate', meaning 'to deceive', because it was often confused with other minerals like tourmaline and beryl.
Field identification & locations
Identify by its distinctive electric blue color and 'softer' feel compared to beryl. Commonly found in Madagascar, Brazil, and Burma. Collectors should look for its hexagonal crystal habit and glass-like luster.
