Commodity Code

potassium

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

definition Potassium is a chemical element with symbol K (from Neo-Latin kalium) and atomic number 19. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction and burning with a lilac flame. more like this
notation
02.01.19 more like this
K more like this
source http://en.wikipedia.org/wiki/Potassium more like this
type
Resource
Concept
broader metal
narrower potassium
in scheme commodity code
is primary topic of potassium