Definition of armenite in English:

armenite

Pronunciation /ˈɑːmənʌɪt/

noun

Mineralogy
  • A rare silicate mineral containing aluminium, calcium, and barium, typically occurring as colourless or greyish-green prismatic crystals.

    Formula: BaCa₂Al₆Si₈O₂₈.2H₂O. Crystal system: trigonal.

Origin

1940s. From the name of the Armen mine, Kongsberg, Norway, where the mineral was discovered + -ite.