mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

Hardness: 5 on Mohs scale
Color: Teal to neon blue
Luster: Vitreous to sub-resinous

Identified July 9, 2026More mineral →

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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.