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.
Lutetium is a chemical element with the symbol Lu and atomic number 71. Because of the rarity and high price, lutetium has very few commercial uses. Stable lutetium can be used as catalysts in petroleum cracking in refineries and can also be used in alkylation, hydrogenation, and polymerization applications. It has also been used in electronics applications.
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.
Skutterudite Rare Steel Gray Metallic Crystal, Cobalt Nickel Ore Mineral Specimen, mined in Morocco Collector's Choice
Rare Steel Gray Metallic Skutterudite Crystal - Skutterudite is the cobalt-rich end member of a series in which Nickel or Iron replaces part of the Cobalt. Enough nickel is usually present to make Skutterudite a significant ore of Nickel. The iron rich variety is rare. The mineral has a bright metallic luster, and is tin white or light steel gray in color.