mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

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

Identified May 9, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed in igneous environments like pegmatites and hydrothermal veins, or in metamorphic rocks rich in calcium. It is found in deposits ranging from Precambrian to recent geological periods.

Uses & applications

Primarily used as a source of phosphorus for fertilizer; also used as a gemstone in jewelry (earrings and pendants) and for metaphysical collecting.

Geological facts

Apatite is the defining mineral for a hardness of 5 on the Mohs scale. The name is derived from the Greek word 'apate', meaning 'to deceive,' because it was often confused with other minerals like tourmaline or beryl.

Field identification & locations

Identify in the field by its hexagonal crystal habit and its ability to be scratched by a steel knife but not by a copper penny. Commonly found in Madagascar, Brazil, and Mexico.