Definition of greigite in English:

greigite

noun

Mineralogy
  • A strongly magnetic iron sulphide mineral that occurs as microscopic pink, blue, or black crystals and is found in lake sediments and magnetosomes.

Origin

1960s. From the name of Joseph Wilson Greig, U.S. mineralogist and geochemist + -ite.

Pronunciation

greigite

/ˈɡriːɡʌɪt/