Praseodymium Element Number 59 Pr 

Praseodymium is the third Lanthanide metal, with a name I chronically misspell and mispronounce. Like Lanthanum and Cerium I keep my Praseodymium sample under paraffin oil. Praseodymium is a silvery metal when clean and shiny, but it will oxidize into a pretty green color.

Praseodymium metal can burn and form Oxides, Praseodymium IV can oxidize water into O2 instantly, as it is a very strong oxide. Many compounds of Praseodymium can be made, including Selenides and Tellurides.

Although Praseodymium forms many compounds the element has few applications. Some uses of Praseodymium are colorants in materials such as glass. Many glass applications for Praseodymium include filtering out yellow light, and also used in goggles for welding and glass blowing. Praseodymium can be used to color Cubic Zirconium a yellow green color.

Praseodymium has been used in a Nickle compound to help investigate the temperature absolute zero. The magneto-caloric effect of Pr-Ni5 has helped scientist come near 1/1000 of a degree to absolute zero in labs.Praseodymium is used in spark "flint" or mischmetal, also it can alloy with Magneseium and make strong light materials.

Praseodymium is now being incorporated into the powerful NIB magnets. The use of Praseodymium in NIB magnets will enhance the pulling power, and can substitute the Neodymium. Praseodymium is a rare earth metal that is under appreciated, with its pretty green color, and difficult name. I am happy to post photos of raw chunks and a small cut slab.

 These chunks of Praseodymium have a pretty green tint oxide layer. They are kept under oil, and removed for the photo, the shiny appearance is oil residue

Pr 59 Lanthanide  AW:140.90765  D:6.77  MP: 1715  BP:6368 

Neodymium Element Number 60 Nd 

These pure Neodymium shavings make a nice photo. They are kept under argon to prevent further oxidation.

Nd 60 Lanthanide AW:144.242  D:7.01  MP:1875  BP:5565   

Neodymium is the 4th lanthanide with number 60 on the periodic table. like many rare earth metals Neodymium is reactive with air, and is best kept in oil or Argon. As a rare earth element, Neodymium is about as rare as Copper.

Neodymium  uses include glass additives  for many applications such as lighting. Lights made with Neodymium are usually pleasant colors, and glass made with Neodymium has a color change effect depending on what type of light source is upon it. Neodymium lasers are extremely powerful, and used in ICF fusion

Neodymium dust can ignite and explode. NIB magnets are toxic, and also can burn and explode with toxic vapors. NIB magnets also are usually coated with Nickle, and very strong. Two NIB magnets as small as 3/8" cubes can collide with enough force to harm pinched skin, and shatter causing shrapnel injuries.