Volborthite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Volborthite \Vol"borth*ite\, n. [So named after Volborth, who
     first discovered it.] (Min.)
     A mineral occurring in small six-sided tabular crystals of a
     green or yellow color. It is a hydrous vanadate of copper and
     lime.
     [1913 Webster]