• Madagascar

Apatite (blue, yellow,green)

Feature Specification
Chemical Formula Ca₅(PO₄)₃(F,Cl,OH)
Color Colorless, green, blue, yellow, or purple
Hardness 5 on the Mohs scale
Density 3.1–3.2 g/cm³
Luster Vitreous (glassy)
Crystal System Hexagonal
Cleavage Poor to imperfect
Transparency Transparent to translucent
Occurrence Found in igneous, sedimentary, and metamorphic rocks
Uses Fertilizers, gemstone, industrial applications
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