hellandite

钙铒钇石

释义与例句

n.
  1. 1.

    A monoclinic borosilicate mineral containing rare earths, aluminium and calcium.

    不可数 化学 地质

词源

Named after Amund Theodor Helland born 11 October 1846 in Bergen, Norway, who was a geology professor at Royal Frederick University. + -ite

来源：wiktionary