REE is a generic name whereas rare metals are specific name given to a group of metallic elements.

The Rare Earth Elements (REE) are 15 Elements of the lanthanides in the periodic charts of elements:

• Lanthanum (La) 50 ppm

• Cerium (Ce) 83 ppm

• Praseodymium (Pr) 13 ppm

• Neodymium (Nd) 44 ppm

• Promethium (Pm) NA

• Samarium (Sm) 7.7 ppm

• Europium (Eu) 2.2 ppm

• Gadolinium (Gd) 6.3 ppm

• Terbium (Tb) 1.0 ppm

• Dysprosium (Dy) 8.5 ppm

• Holmium (Ho) 1.6 ppm

• Erbium (Er) 3.6 ppm

• Thulium (Tm) 0.5 ppm

• Ytterbium (Yb) 3.4 ppm

• Lutetium (Lu) 0.8 ppm

By chemical definition

Sometimes Yttrium (Y) and Scandium (Sc) are also grouped among this header

Rare metals is a term used by economic geologists and chart analysist for metals which we need and of high relevance for the economy but for geogenic, political and economic reasons are very rare and often also named “critical elements. This comprehensive term is not a fixed one and very volatile, especially for the lower ranks of this tripartite classification scheme which is based upon the current market assessments.

• High-risk commodities

– REE, Nb, W, Pt, Pd, Bi, Mg, Co, Sb, In, Be, Ge, Ga

• Medium-risk commodities

– Li, Pb, Mo, Cr……

• Low-risk commodities

– Cu, Ni, Fe, Ag, Au, Zn

HGD