☰
options Recherche  
  • Résultats pour
    • specimensblack background
  • (1)
Samarskite, a radioactive rare earth mineral of the series which includes samarskite-(Y) and samarskite-(Yb) with formula: (YFe3+Fe2+U,Th,Ca)2(Nb,Ta)2O8.
01428620
John Cancalosi / Samarskite, a radioactive rare earth mineral of the series which includes samarskite-(Y) and samarskite-(Yb) with formula: (YFe3+Fe2+U,Th,Ca)2(Nb,Ta)2O8.