Definition of montroseite in English:

montroseite

noun

Mineralogy
  • An oxyhydroxide of vanadium and iron, (V,Fe+3)O(OH), occurring as microscopic black crystals of the orthorhombic system.

Origin

1950s. From Montrose, the name of a county in Colorado, where the mineral was first found + -ite.

Pronunciation

montroseite

/mɒnˈtrəʊˌzʌɪt/