mineral
Apatite
Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)
AI-generated identification · may be incorrectHardness of 5 on Mohs scale, typically green or blue-green color, vitreous luster, hexagonal crystal system, and specific gravity around 3.2.
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Physical properties
Hardness of 5 on Mohs scale, typically green or blue-green color, vitreous luster, hexagonal crystal system, and specific gravity around 3.2.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through crystallization in pegmatites and hydrothermal veins.
Uses & applications
Used primarily for the production of phosphate fertilizers, phosphoric acid, and occasionally as minor gemstone material for collectors.
Geological facts
Apatite is the defining mineral for a hardness of 5 on the Mohs hardness scale. Teeth and bones in vertebrates are composed of a similar apatite-group material.
Field identification & locations
Identified by its distinct hexagonal crystal form, typical green coloration, and specific hardness of 5. Commonly found in Madagascar, Brazil, and Mexico.
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