It may refer more specifically to the following manganese minerals: •
Birnessite, {{chem2|(Na,Ca)0.5(Mn^{IV},Mn^{III})2O4 · 1.5 H2O}} •
Buserite, •
Hausmannite, {{chem2|Mn^{II}Mn^{III}2O4}} •
Manganite, MnO(OH) •
Manganosite, MnO •
Psilomelane, {{chem2|Ba(Mn^{II})(Mn^{IV})8O16(OH)4}}, or •
Pyrolusite, {{chem2|Mn^{IV}O2}} Manganese may also form mixed oxides with other metals: •
Bixbyite, {{chem2|(Fe^{III},Mn^{III})2O3}}, a manganese(III) iron(III) oxide mineral •
Jacobsite, {{chem2|Mn^{II}Fe^{III}2O4}}, a manganese(II) iron(III) oxide mineral •
Columbite, {{chem2|(Fe^{II},Mn^{II})Nb2O6}}, a niobate of iron(II) and manganese(II) •
Tantalite, {{chem2|(Fe^{II},Mn^{II})Ta2O6}}, a tantalum(V) mineral group close to that of columbite •
Coltan, a mixture of columbite and tantalite series •
Galaxite, {{chem2|Mn^{II}Al2O4}}, a spinel mineral •
Todorokite, , a rare complex hydrous manganese oxide mineral ==References==