mineral

Blue Apatite

Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Hardness: 5 on Mohs scale; Color: Neon blue to greenish-blue; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 3.16–3.22

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

Identified March 25, 2026More mineral →

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Physical properties

Hardness: 5 on Mohs scale; Color: Neon blue to greenish-blue; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 3.16–3.22

Formation & geological history

Formed in igneous pegmatites, metamorphic rocks (marbles), or hydrothermal veins. The blue variety is often associated with phosphate-rich environments and can date from several hundred million to billions of years old.

Uses & applications

Primarily used as a gemstone (collector's stone), and industrially as a major source of phosphorus for fertilizers and chemical manufacturing.

Geological facts

Apatite is known as the 'Deceiver' because its name comes from the Greek word 'apate', meaning 'to deceive,' due to its similarity to other more valuable minerals like tourmaline and beryl. It is the defining mineral for 5 on the Mohs hardness scale.

Field identification & locations

Identify in the field by its distinct hexagonal crystal habit and its inability to scratch glass (glass is harder). Commonly found in Brazil, Madagascar, Mexico, and Myanmar. Collectors should look for intense 'neon' saturation and transparency.

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Green Apatite on Albite

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