mineral
Green apatite crystal
Apatite group; likely fluorapatite, Ca₅(PO₄)₃F
AI-generated identification · may be incorrectGreen, glassy to resinous crystal with visible striations and fractured faces; hexagonal crystal system, Mohs hardness 5, uneven to conchoidal fracture, and no prominent cleavage. Color and appearance alone cannot confirm the identification.
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Physical properties
Green, glassy to resinous crystal with visible striations and fractured faces; hexagonal crystal system, Mohs hardness 5, uneven to conchoidal fracture, and no prominent cleavage. Color and appearance alone cannot confirm the identification.
Formation & geological history
Apatite forms in igneous and metamorphic rocks, as well as in hydrothermal veins and phosphate-rich sedimentary deposits. It occurs in rocks of many geological ages.
Uses & applications
Apatite is a major source of phosphate for fertilizers and chemicals; transparent, well-colored crystals are cut as collector gems, though they are relatively soft.
Geological facts
Apatite is the defining mineral for Mohs hardness 5 and is a principal component of bones and teeth.
Field identification & locations
Check for hardness near 5, hexagonal crystal habits, and striations; apatite occurs worldwide, including Brazil, Mexico, Madagascar, and Canada. The image suggests apatite, but visual identification is not definitive.
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