Ramsdellite

Facts

Chemical formula

Mn⁴⁺O₂

Crystal system

Orthorhombic

Mohs hardness

3.0

Elements in formula

Manganese, Oxygen

Number of elements

2

IMA status

Grandfathered

Named after

Lewis Stephen Ramsdell

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3929952