Wassonite

Wassonite is a scarce titanium sulfide mineral with the chemical formula TiS.^[2][4] 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.^[5] This grain represents the first observation in nature of the synthetic compound titanium(II) sulfide.

Wassonite
General
Category	Sulfide mineral
Formula	TiS
IMA symbol	Was[1]
Crystal system	Trigonal
Crystal class	Hexagonal scalenohedral (3m) H-M symbol: (3 2/m)
Space group	R3m
Identification
References	[2][3]

The mineral was named after John T. Wasson, a professor at the University of California, Los Angeles and was approved by the International Mineralogical Association.^[6][7]