[ ros-koh-lahyt ]
/ ˈrɒs koʊˌlaɪt /

noun Mineralogy.

a brown variety of muscovite in which some aluminum is replaced by vanadium.

Origin of roscoelite

1875–80; named after Sir Henry Roscoe (1833–1915), English chemist; see -lite Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for roscoelite

  • Locally the sandstones contain as much as 20 per cent of the roscoelite.

  • Roscoelite is a vanadium mica from a gold mine at Granite creek, California.

    The Galaxy|Various