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Manganese oxide
Birnessite
Bixbyite
Coltan
Columbite
Galaxite
Hausmannite
Jacobsite
Manganese dioxide
Manganese(II) oxide
Manganese(II,III) oxide
Manganese(III) oxide
Manganese(VI) oxide
Manganese(VII) oxide
Manganite
Manganosite
Psilomelane
Pyrolusite
Tantalite
Todorokite