Pyroxmangite has the general chemical formula of MnSiO3. It is the high-pressure, low-temperature dimorph
It was first described in 1913 and named for the mineral group, pyroxenes It forms a series with pyroxferroite.
Pyroxmangite occurs in metamorphosed ore deposits rich in manganese. Associated minerals include spessartine , tephroite, pyrophanite and rhodochrosite