Tags: Chemical Substance, Mineral.
Wassonite is an extremely rare sulfide mineral with chemical formula TiS. Its discovery was announced in a 2011 NASA press release as a single small grain within an enstatite chondrite meteorite called Yamato 691 which was found during a 1969 Japanese expedition to Antarctica. This grain represents the first observation in nature of the synthetic compound titanium(II) sulfide.The mineral was named after John T.