Definition of botallackite in English:

botallackite

noun

Mineralogy
  • A rare copper-containing mineral typically occurring as small blue-green platy crystals.

Origin

Mid 19th century. From the name of the Botallack mine, Cornwall, where the mineral was first found + -ite: see quot. 1865.

Pronunciation

botallackite

/bəʊˈtaləkʌɪt/