Contributed by collector no. 4
Vanadium group: olive-green tarnished Vanadium chunks, Niobium chunks, and Tantalum chunks
Contributed by collector no. 3
The Vanadium metal group: Vanadium , Niobium , and Tantalum
One small, two medium, and one large sample of Niobium metal chunks. The large chunk shows some oxidation.
Roughly 3.5 cm diameter chunk of Niobium metal, shaped somewhere between disc and a sphere.
Contributed by the site creator
Beautiful small crystal of Niobium metal. Niobium is a transition metal and should not be confused with the rare-earth metal Neodymium !
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