Definition of pickeringite in English:

pickeringite

Pronunciation /ˈpɪk(ə)rɪŋʌɪt/

noun

Mineralogy
  • A mineral that is a monoclinic hydrated sulphate of aluminium and magnesium, MgAl₂ (SO₄)₄.22H₂ O, occurring as transparent or translucent, usually whitish, aggregates of fibrous or acicular crystals.

Origin

Mid 19th century. From the name of John Pickering, American philologist + -ite.