Definition of magadiite in US English:

magadiite

noun

Mineralogy
  • A rare clay mineral, a monoclinic sodium silicate, NaSi₇O₁₃(OH)₃·4H₂O, found in putty-like layers deposited from brines of some former lakes.

Origin

1960s. From the name of Lake Magadi (from Swahili magadi potassium, soda) in Kenya, where the mineral was discovered in 1967 + -ite.

Pronunciation

magadiite

/məˈɡadɪʌɪt/