mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
AI-generated identification · may be incorrectHardness: 5 Mohs; Color: Teal to deep blue; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22
- Hardness
- 5 Mohs
- Color
- Teal to deep blue
- Luster
- Vitreous to sub-resinous
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Physical properties
Hardness: 5 Mohs; Color: Teal to deep blue; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22
Formation & geological history
Formed in igneous pegmatites, metamorphic rocks (marble), and sedimentary phosphate beds. Found in geological environments rich in phosphorus.
Uses & applications
Primarily used in the production of phosphorus fertilizers; also used as a gemstone for jewelry, in lapidary work, and as a mineral specimen for collectors.
Geological facts
Apatite is the mineral that makes up the tooth enamel and bones of most mammals; the name is derived from the Greek word 'apate', meaning deceit, because it is often confused with other minerals like tourmaline and beryl.
Field identification & locations
Identify by its characteristic blue-green color and hexagonal crystal habit when not tumbled; its hardness of 5 is a key diagnostic tool. Commonly found in Madagascar, Brazil, and Mexico.
