Hypertext Webster Gateway: "wulfenite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Wulfenite \Wul"fen*ite\, n. [So named after F. X. Wulfen, an
Australian mineralogist.] (Min.)
Native lead molybdate occurring in tetragonal crystals,
usually tabular, and of a bright orange-yellow to red, gray,
or brown color; -- also called {yellow lead ore}.
From WordNet (r) 1.7 (wn)
wulfenite
n : a yellow to orange or brown mineral used as a molybdenum ore
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