IMA mineral species

Romanèchite

(Ba,H₂O)₂(Mn⁴⁺,Mn³⁺)₅O₁₀

Baryum manganese oxide mineral.

Romanèchite specimen
Romanechite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula(Ba,H₂O)₂(Mn⁴⁺,Mn³⁺)₅O₁₀
ElementsBa, H, O, Mn
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolRmn
Nickel–Strunz class4.DK.10

“—” means no reliable value in Wikidata yet. Check Mindat for full data.