mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Hardness: 5 on Mohs scale; Color: Neon blue to greenish-blue; Luster: Vitreous to sub-vitreous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22.

Hardness: 5 on Mohs scale
Color: Neon blue to greenish-blue
Luster: Vitreous to sub-vitreous

Identified July 17, 2026More mineral →

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Physical properties

Hardness: 5 on Mohs scale; Color: Neon blue to greenish-blue; Luster: Vitreous to sub-vitreous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22.

Formation & geological history

Formed in igneous pegmatites, hydrothermal veins, and metamorphic environments such as marbles or skarns. Often occurs as a common accessory mineral in various rock types throughout Earth's history.

Uses & applications

Primarily used as a minor gemstone for jewelry (though soft), a collector's mineral, and historically as a source of phosphorus for fertilizer production.

Geological facts

The name 'Apatite' is derived from a Greek word meaning 'to deceive' because it was often mistaken for other minerals like peridot or beryl. It is also the defining mineral for hardness 5 on the Mohs scale.

Field identification & locations

Identify by its characteristic neon blue color, hexagonal crystal habits, and its ability to be scratched by a steel knife (distinguishing it from harder beryl or topaz). Common locations include Brazil, Madagascar, Mexico, and Myanmar.