mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
AI-generated identification · may be incorrectHardness: 5 on Mohs scale; Color: Teal to neon blue; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.1-3.3
- Hardness
- 5 on Mohs scale
- Color
- Teal to neon blue
- Luster
- Vitreous to sub-resinous
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Physical properties
Hardness: 5 on Mohs scale; Color: Teal to neon blue; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.1-3.3
Formation & geological history
Commonly forms in igneous pegmatites, hydrothermal veins, and metamorphic rocks. This blue variety is often associated with phosphate-rich environments.
Uses & applications
Primary source of phosphorus for fertilizer; used as a gemstone in jewelry, though its softness limits it to low-wear items like earrings or pendants.
Geological facts
Apatite is the specific mineral that makes up the hydroxyapatite in human teeth and bone. The name comes from the Greek word 'apatein', meaning 'to deceive', because it was often mistaken for other minerals like beryl.
Field identification & locations
Identify by its distinctive blue-green color and hexagonal crystal habits. It can be scratched by a steel knife but will scratch a penny. Found in Brazil, Madagascar, Mexico, and Myanmar.
