Noun bastnaesite has 1 sense
  1. bastnasite, bastnaesite - a yellow-to-brown mineral that is a source of rare earth elements
    --1 is a kind of mineral
    --1 has substances:
     cerium, Ce, atomic number 58; neodymium, Nd, atomic number 60; praseodymium, Pr, atomic number 59; samarium, Sm, atomic number 62
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