Strontiomelane

{{refimprove|date=April 2025}}

{{Short description|Mineral}}

{{Infobox mineral

| name = Strontiomelane

| category = Oxide mineral > Hollandite supergroup

| boxwidth =

| image =

| imagesize =

| caption =

| formula = {{chem2|Sr(Mn(4+)6Mn(3+)2)O16}}

| IMAsymbol = Sml

| strunz = 4.DK.05a

| color =

| system = Monoclinic

| mohs =

| luster = Sub-Metallic

| streak =

| gravity = 4.66 g/cm3 (calculated)

| other =

| references =

}}

Strontiomelane is an oxide mineral from the coronadite group in the hollandite supergroup.Page Strontiomelane: Mineral information, data and localities on {{cite web | url=https://www.mindat.org/min-7317.html | title=mindat.org | publisher=Hudson Institute of Mineralogy | access-date=2025-04-10}} Specimens of the mineral appear very similar to other manganese oxides from the same group, such as the Ba-analogue hollandite. The type locality is the Praborna mine in Saint-Marcel, Italy.