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Frequencies (cm-1) : 169, 227, 303, 360, 443, 486, 509, 713, 809, 836, 868, 987,
Ca3Fe2(SiO4)3
Sample : Fumarolitic andradite cristals developed on a trachyte fracture surfaces.
Location : Europe, France, Cantal, Puy de Menoyre,