roscoelite

roscoelite [ros-koh-lahyt] ExamplesWord Origin noun Mineralogy.

1. 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 Examples from the Web for roscoelite Historical Examples of roscoelite

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

The Economic Aspect of Geology

C. K. Leith

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

The Galaxy

Various