from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A red, yellow, or brown mineral, essentially an ore of vanadium and lead.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A reddish mineral, a mixed chloride and vanadate of lead with the chemical formula Pb5(VO4)3Cl, that is commercial source of vanadium.
from the GNU version of the Collaborative International Dictionary of English
- n. A mineral occurring in yellowish, brownish, and ruby-red hexagonal crystals. It consists of lead vanadate with a small proportion of lead chloride.
from The Century Dictionary and Cyclopedia
- n. A mineral consisting of lead vanadate with lead chlorid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mineral consisting of chloride and vanadate of lead; a source of vanadium
Vanadium occurs in certain rare minerals, such as vanadinite
A very beautiful, deep red mineral, vanadinite, contains vanadium and was named after its vanadium content.
Blood had frozen in copious quantities between the two walls, giving the inlet the look of quartz littered with crystals of vanadinite.
In the center of the gray stone chest of the statue lay a dimly pulsing light the hue of vanadinite.
There were other mines that were quite productive though including a few gold mines along with uranium, asbestos, vanadinite and wulfenite mines.
The sample photo is vanadinite, an ore of vanadium and lead.