Zoisite

1 definition found

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

  Zoisite \Zois"ite\, n. [After its discoverer, Von Zois, an
     Austrian mineralogist.] (Min.)
     A grayish or whitish mineral occurring in orthorhombic,
     prismatic crystals, also in columnar masses. It is a silicate
     of alumina and lime, and is allied to epidote.
     [1913 Webster]