Hiroseite
Hiroseite is an IMA-recognized mineral species in the silicate class, with the chemical formula FeSiO₃.
It crystallizes in the orthorhombic crystal system (space group Pnma). It is a member of the Perovskite structural group.
IMA symbol Hir, IMA status: approved, named in 2019.
Found in a quenched shock-melted portion of the heavily shocked (<20 GPa; <2000 flC) L6 Suizhou chondrite meteorite, by the transformation of chemically zoned olivine. Perhaps relevant to the mineralogy of Earth’s deep interior.
It is found associated with Forsterite (Mg1.79Fe0.19)Si1.01O4, pyroxene (Mg0.38-0.75Fe0.20-0.40Na0.00-0.08Al0.00-0.04 Ca0.01-0.02Mn0.01-0.02)SiO3, taenite, troilite, MgSiO3 glass.
The mineral was named to honor Kei Hirose (b. 1968) for his fundamental contributions to the discovery of the post- perovskite phase and to the mineralogy of mantle perovskite in general.