pyroxmangite

{{infobox mineral | name = Pyroxmangite | category = Inosilicate minerals (single chain) | group = Pyroxene group | series = Pyroxferroite-Pyroxmangite series | image = Pyroxmangite-261781.jpg | caption = Pyroxmangite from Chubu Region, Honshu Island, Japan | formula = MnSiO3 | IMAsymbol = Pxm | strunz = 9.DO.05 | system = Triclinic | class = Pinacoidal () (same H-M symbol) | symmetry = C | unit cell = a = 9.69 Å, b = 10.5 Å, c = 17.39 Å; α = 112.17°, β = 102.85°, γ = 82.93°; V = 1,596.00 Å3; Z = 28 | color = pink, red, brown | twinning = Lamellar on {010}, simple on {001} | cleavage = Perfect on {110}, {10}, (110) ^ (10) = 92° poor on {010}, {001} | fracture = hackly, uneven | tenacity = brittle | mohs = – 6 | luster = vitreous, pearly | birefringence = δ=0.018 | streak = colorless | gravity = 3.8 | density = | other = morphology: tabular crystals, granular massive, grainy | diaphaneity = transparent, translucent | references = }}

Pyroxmangite has the general chemical formula of MnSiO3. It is the high-pressure, low-temperature dimorph of rhodonite.