Strontiomelane is an

oxide mineral The oxide mineral class includes those minerals in which the oxide anion (O2−) is bonded to one or more metal alloys. The hydroxide-bearing minerals are typically included in the oxide class. Minerals with complex anion groups such as the sil ...

from the coronadite group in the hollandite supergroup.Page ''Strontiomelane: Mineral information, data and localities'' on Specimens of the mineral appear very similar to other manganese oxides from the same group, such as the Ba-analogue

hollandite Hollandite (chemical formula: Ba(Mn4+6Mn3+2)O16) is a manganese oxide mineral. Its structure consists of double chains of MnO6 octahedra delimiting 2 × 2 tunnels. The electrostatic charge created by the Mn3+ for Mn4+ substitution is balanced by ...

. The type locality is the Praborna mine in Saint-Marcel,

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

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Strontium minerals Manganese(III,IV) minerals Oxide minerals Monoclinic minerals Minerals described in 1999 {{oxide-mineral-stub