Definition of moncheite in US English:

moncheite

(also moncheïte)

noun

Mineralogy
  • A trigonal telluride and bismuthide of palladium and platinum, (Pt, Pd)(Te, Bi)₂, occurring as minute metallic grey grains, often in deposits of chalcopyrite.

Origin

1960s; earliest use found in American Mineralogist. From Russian mončeit from monče- + -it.

Pronunciation

moncheite

/ˈmɒntʃɪʌɪt/