Definition of matildite in English:

matildite

noun

Mineralogy
  • A trigonal sulphide of silver and bismuth, AgBiS ₂, usually occurring as grey to black granular masses that are opaque with a metallic lustre.

Origin

Late 19th century; earliest use found in Edward Dana (1849–1935), mineralogist and physicist. From Italian matildite from Matilda, the name of a mine near Morococha in the department of Junín in central Peru + -ite.

Pronunciation

matildite

/məˈtɪldʌɪt/