Definition of norsethite in US English:

norsethite

noun

Mineralogy
  • A trigonal carbonate of barium and magnesium, BaMg(CO₃)₂, which occurs as whitish crystals with a vitreous or pearly lustre and is a member of the dolomite group.

Origin

1950s. From the name of Keith Norseth + -ite.

Pronunciation

norsethite

/ˈnɔːsəθʌɪt/