[ Top ] [ Japanese ]

Pyroxferroite [abbr. Pxf ]

Year of discovery: 1970 (Mare Tranquillitatis (Sea of Tranquility), The Moon), 1954 (Japan)

Locality list: 4 localities of pyroxferroite

• FeSiO₃
• (Fe,Mn,Ca)SiO₃
• [Fe²⁺₇][Si₇O₂₁]^14-

• Class: Pyroxmangite group < 7-periodic < Pyroxenoid
• Class: Inosilicate (Single chain)

• Fe => Mn: Vittinkiite, Pyroxmangite (Series)
• Fe => Mg: Akimotoite
• Fe => Ca: Wollastonite

• Fe₂ => CaFe: Ferrobustamite

• SiO₃ => TiO₃: Ilmenite

• Color: Pale yellow, Yellowish brown, Colorless
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {110} (1 plane), Poor on {010} and {001} (2 planes)
• Hardness: 4.5-5.5
• Density: 3.7

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=6.6, b=7.6, c=17.4, α=114.3, β=82.7, γ=94.8