Part Time Accounting Assistant. Accounting Now has an exciting opportunity with a Manufacturing firm in the Northwest suburbs. Our client is looking to add a Part Time Accounting Assistant to their team and ready to start someone quickly! The chosen candidate will demonstrate entry leve.
Lanthanum is considered a rare earth metal because the process to mine it is difficult, time-consuming and expensive. Lanthanum is rarely the dominant lanthanide found in the rare earth minerals, and in their chemical formulae it is usually preceded by cerium. Rare examples of La-dominant minerals are monazite-(La) and lanthanite-(La).
Discovered by: Carl Mosander of Sweden. Description: Named from the Greek word meaning to lie hidden, lanthanum is a very soft, silvery-white metal--soft enough to cut with a knife. It is very reactive, tarnishing quickly in air and reacting with water to form hydrogen gas.escription: Named from the Greek word meaning to lie hidden, lanthanum is a very soft, silvery-white metal--soft enough to cut with a knife.