Merrihueite
Merrihueite is an IMA-recognized mineral species in the silicate class, with the chemical formula (K,Na)₂(Fe²⁺,Mg)₅Si₁₂O₃₀.
It crystallizes in the hexagonal crystal system (space group P6/mcc). It is a member of the Milarite structural group.
Key properties: specific gravity 2.87; optically uniaxial.
IMA symbol Mhu, IMA status: approved, named in 1965.
Rare, in a few chondules of a chondrite, as inclusions in clinopyroxenes.
It is found associated with Clinoenstatite, fayalitic olivine, nickel-iron.
The name refers to Craig M. Merrihue (?{1965), meteoriticist, of the Smithsonian Astrophysical Observatory, Cambridge, Massachusetts, USA.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more M minerals or help write this entry.