From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
CategorySulfide mineral
(repeating unit)
Crystal systemTrigonal
Crystal classHexagonal scalenohedral (3m)
H-M symbol: (3 2/m)
Space groupR3m

Wassonite is an extremely rare titanium sulfide mineral with chemical formula TiS.[1][3] 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.[4] This grain represents the first observation in nature of the synthetic compound titanium(II) sulfide.

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.[5][6]


  1. ^ a b Mindat.org
  2. ^ Mineralienatlas
  3. ^ Dwayne C. Brown; William Jeffs (2011-04-05). "Scientists Find New Type Of Mineral In Historic Meteorite". NASA. Retrieved 2011-04-07.
  4. ^ Bryner, Jeanna (2011-04-06). "4.5-Billion-Year-Old Antarctic Meteorite Yields New Mineral". LiveScience. Retrieved 2011-04-07.
  5. ^ "Scientists Find New Type of Mineral in Historic Meteorite". Science Daily. 2011-04-05. Retrieved 2011-04-07.
  6. ^ Nakamura-Messenger, K., Clemett, S.J., Rubin, A., Choi, B.-G., Keller, L.P., Zhang, S., Rahman, Z. and Oikawa, K. (April 2011). "Wassonite, IMA 2010-074". CNMNC Newsletter (8): 293.CS1 maint: multiple names: authors list (link)