Samarskite

2 definitions found

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

  Samarskite \Sa*mar"skite\, a. [After Samarski, a Russian.]
     (Min.)
     A rare mineral having a velvet-black color and submetallic
     luster. It is a niobate of uranium, iron, and the yttrium and
     cerium metals.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  samarskite
       n : a complex black mineral occuring in pegmatites