Vanadium occurs in certain rare minerals, such as vanadinite.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

In the center of the gray stone chest of the statue lay a dimly pulsing light the hue of vanadinite.    From Wordnik.com.  [Splinter Of The Mind's Eye]

A very beautiful, deep red mineral, vanadinite, contains vanadium and was named after its vanadium content.    From Wordnik.com.  [Vanadium] Reference

The sample photo is vanadinite, an ore of vanadium and lead.    From Wordnik.com.  [Netvouz - new bookmarks] Reference

There were other mines that were quite productive though including a few gold mines along with uranium, asbestos, vanadinite and wulfenite mines.    From Wordnik.com.  [Desert News] Reference