Commodity Code

rare earth oxide

http://resource.geosciml.org/classifier/cgi/commodity-code/rare-earth-oxide

alt label
TREO more like this
definition As defined by IUPAC, a rare earth element (REE) or rare earth metal is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium.[2] Scandium and yttrium are considered rare earth elements because they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties. more like this
narrower heavy rare earth oxide
broader rare earth oxide
light rare earth oxide
broader rare earth oxide
notation
02.04.05.08 more like this
REEOx more like this
source http://en.wikipedia.org/wiki/Rare_earth_element more like this
type
Resource
Concept
broader chemical oxide product
narrower rare earth oxide
in scheme commodity code
is primary topic of rare earth oxide