mineral

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

AI-generated identification · may be incorrect

Hardness: 5 on Mohs scale; Color: Neon blue to dark teal; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor/indistinct; Specific gravity: 3.1–3.2

Hardness: 5 on Mohs scale
Color: Neon blue to dark teal
Luster: Vitreous to sub-resinous

Identified May 13, 2026More mineral →

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Physical properties

Hardness: 5 on Mohs scale; Color: Neon blue to dark teal; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor/indistinct; Specific gravity: 3.1–3.2

Formation & geological history

Formed through magmatic and sedimentary processes, often found in pegmatites, metamorphic rocks like marble, and sedimentary phosphate deposits. Common in both igneous and metamorphic environments.

Uses & applications

A primary source of phosphorus for fertilizer. High-quality specimens are used as gemstones and in jewelry, while rough specimens are popular for mineral collecting and metaphysical practices.

Geological facts

Apatite is the mineral that defines index 5 on the Mohs scale of mineral hardness. It is the same material that comprises the enamel on human teeth.

Field identification & locations

Identify in the field by its distinct hexagonal crystal habit and its inability to scratch glass but capability to scratch fluorite. Found globally with major deposits in Brazil, Madagascar, and Mexico.