Commodity Code

strontium

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

definition Strontium (/ˈstrɒntiəm/ STRON-tee-əm) is a chemical element with symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when it is exposed to air. Strontium has physical and chemical properties similar to those of its two neighbors calcium and barium. It occurs naturally in the minerals celestine, putnisite and strontianite. more like this
notation
02.01.23 more like this
Sr more like this
source http://en.wikipedia.org/wiki/Strontium more like this
type
Resource
Concept
broader metal
narrower strontium
in scheme commodity code
is primary topic of strontium