Ytterbium (Symbol Yb, atomic number 70) – Marignac discovered a new component in the earth then known as erbia in 1878 which he called ytterbia. In 1907, Urbain separated ytterbia into two components which he called neoytterbia and lutecia. The elements in these earths are now knows as ytterbium and lutetium, respectively. To find out more about this rare earth metal visit our website.
Molybdenum Ore. The element molybdenum (42) does not occur as a free metal, only in various oxidation states in minerals. It has the sixth-highest melting point of any metal.
Dendritic Agate Cabochon
Holmium is not naturally found as a free element. It does occur combined with other elements in gadolinite, monazite, and other rare-earth minerals. The main mining areas are China, United States, Brazil, India, Sri Lanka, and Australia with reserves of holmium estimated at 400,000 tonnes.