[ Top ] [ Japanese ]

Pyroxmangite (Photo) [abbr. Pxm ]

Year of discovery: 1913 (World), 1940 (Japan)

Locality list: 126 localities of pyroxmangite

• MnSiO₃
• (Mn,Fe)SiO₃
• [Mn²⁺₇][Si₇O₂₁]^14-

• Class: Pyroxmangite group < 7-periodic < Pyroxenoid
• Class: Inosilicate (Single chain)
• Magnetism: Paramagnetic (After heating)

• Polymorph: Vittinkiite (High-temperature Low-pressure, Triclinic)

• Mn => Fe: Pyroxferroite (Series)
• Mn => Mg: Akimotoite
• Mn => Ca: Wollastonite

• Mn₂ => CaMn: Bustamite

• Mn₃ => LiHMn₂: Tanohataite
• Mn₃ => NaHMn₂: Sérandite (Serandite)

• SiO₃ => TiO₃: Pyrophanite
• SiO₃ => SbO₃: Melanostibite

• Color: Pale pink, Brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Habit: Hexagonal platy

• Cleavage: Perfect on {110} (2 planes, 92 degree), Poor on {010} and {001} (2 planes)
• Hardness: 5.5-6
• Density: 3.8

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=9.7, b=10.5, c=17.4, α=112.2, β=102.9, γ=82.9