Commodity Code

gallium

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

definition Gallium is a chemical element with symbol Ga and atomic number 31. Elemental gallium does not occur in free form in nature, but as the gallium(III) compounds that are in trace amounts in zinc ores and in bauxite. Gallium is a soft silvery metal, and elemental gallium is a brittle solid at low temperatures. more like this
notation
02.01.11 more like this
Ga more like this
source http://en.wikipedia.org/wiki/Gallium more like this
type
Resource
Concept
broader metal
narrower gallium
in scheme commodity code
is primary topic of gallium