What is "pyroxmangite"

n. (context mineralogy English) A triclinic-pinacoidal mineral containing iron, manganese, oxygen, and silicon.

Pyroxmangite has the general chemical formula of MnSiO. It is the high-pressure, low-temperature dimorph of rhodonite.

It was first described in 1913 and named for the mineral group, pyroxenes, and is known as the manganese member. It forms a series with pyroxferroite.

Pyroxmangite occurs in metamorphosed ore deposits rich in manganese. Associated minerals include spessartine, tephroite, alleghanyite, hausmannite, pyrophanite, alabandite, rhodonite and rhodochrosite.