ilvaite

from The Collaborative International Dictionary of English v.0.48

Ilvaite \Il"va*ite\, n. [From L. Ilva, the island now called
   Elba.] (Min.)
   A silicate of iron and lime occurring in black prismatic
   crystals and columnar masses.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Yenite \Ye"nite\, n. [After Jena, in Germany.] (Min.)
   A silicate of iron and lime occurring in black prismatic
   crystals; -- also called {ilvaite}. [Spelt also {jenite}.]
   [1913 Webster]

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