Wassonite
Titanium monosulfide — a single grain found in the Yamato 691 Antarctic enstatite chondrite.
Intro adapted from Wikipedia (CC BY-SA).
Wassonite is an IMA-recognized mineral species in the sulfide class, with the chemical formula TiS.
It crystallizes in the hexagonal crystal system (space group R-3m).
Key properties: specific gravity 4.452.
IMA symbol Was, IMA status: approved, named in 2010.
Found in a barred olivine (BO) chondrule, thought to have formed in the solar nebula by melting fine-grained precursor dust, in an enstatite chondrite meteorite.
It is found associated with Forsterite, enstatite, troilite, metallic Fe-Ni, osbornite, schollhornite.
The mineral was named to honor Professor John Taylor Wasson (b. 1934), University of California Los Angeles (UCLA), USA, Departments of Chemistry and Biochemistry, and Earth and Space Sciences.