mineral

Blue Apatite

Apatite (Ca5(PO4)3(F,Cl,OH))

Hardness: 5 on Mohs scale; Color: Neon blue to teal-blue; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor/indistinct; Specific Gravity: 3.16 to 3.22.

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

Identified March 15, 2026More mineral →

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Physical properties

Hardness: 5 on Mohs scale; Color: Neon blue to teal-blue; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor/indistinct; Specific Gravity: 3.16 to 3.22.

Formation & geological history

Formed in igneous environments (pegmatites), metamorphic rocks, and occasionally in sedimentary hydrothermal veins. It is a calcium phosphate mineral that has been present since the Earth's early crust formation.

Uses & applications

Primary source of phosphorus for chemical fertilizers. Gem-quality specimens are used in jewelry (though soft for rings), and rough specimens are popular in metaphysical and crystal collecting markets.

Geological facts

Apatite is the mineral that makes up the tooth enamel and bones of vertebrate animals. Its name is derived from the Greek word 'apatein', which means 'to deceive', because it was historically often confused with other minerals like tourmaline or beryl.

Field identification & locations

Identify by its characteristic blue color and relatively low hardness (can be scratched by a knife). Commonly found in Madagascar, Brazil, Mexico, and Myanmar. In the field, look for hexagonal prismatic crystals in granite pegmatites.