Commodity Code

tellurium

http://resource.geosciml.org/classifier/cgi/commodity-code/tellurium

definition Tellurium is a chemical element with symbol Te and atomic number 52. A brittle, mildly toxic, rare, silver-white metalloid which looks similar to tin, tellurium is chemically related to selenium and sulfur. It is occasionally found in native form, as elemental crystals. more like this
notation
02.02.06 more like this
Te more like this
source http://en.wikipedia.org/wiki/Tellurium more like this
type
Resource
Concept
broader metalloid
narrower tellurium
in scheme commodity code
is primary topic of tellurium