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Monticellite group
[Ca][ A
2+
][SiO
4
]
[ Mn ]:
Glaucochroite
[ Fe ]:
Kirschsteinite
[ Mn ]:
Monticellite
CaA => A
2
:
Olivine group
(Orthorhombic),
Phenakite group
(Hexagonal)
Class:
Nesosilicate
System: Orthorhombic