Rare-earth fluorocarbonates are particularly important as ore minerals for the light rare-earth elements lanthanum, cerium and neodymium. (wikipedia.org)
lanthanein for "to lie hidden, to escape notice" because it hid in cerium ore and was difficult to separate from that rare-earth mineral. (obspm.fr)
Oxide2
It was discovered in the form lanthanium oxide, called lanthana , by the Swedish surgeon and chemist Carl-Gustav Mosander (1797-1858) in 1839. (obspm.fr)
Other additives used in crown glasses include zinc oxide, phosphorus pentoxide, barium oxide, fluorite and lanthanum oxide. (mathisfunforum.com)
Lanthanide1
Lanthanum is a member of the → lanthanide group, also called → rare-earth element s. (obspm.fr)
Heavier elements2
Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. (wikiversity.org)
Within the cores of stars, beryllium is depleted as it is fused into heavier elements. (handwiki.org)
Naturally1
It is a divalent element that occurs naturally only in combination with other elements to form minerals. (handwiki.org)
Alkaline1
It is a steel-gray, strong, lightweight and brittle alkaline earth metal . (handwiki.org)
Chemical element4
Any of the series of 15 consecutive → chemical element s in the → periodic table from → lanthanum to lutetium (→ atomic number s 57 to 71 inclusive). (obspm.fr)