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Olivine group [abbr. Ol ]

[ A²⁺₂ ][SiO₄]

• [ Fe ]: Fayalite
• [ Mg ]: Forsterite
• [ Ni ]: Liebenbergite
• [ Mn ]: Tephroite
• [ Fe ]: Laihunite

• Polymorph: Phenakite group (Hexagonal)
• A₂ => CaA: Monticellite group

• Class: Nesosilicate
• System: Orthorhombic

Etymology: Olieve