Commodity Code

anthracite

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

definition Anthracite is a hard, compact variety of mineral coal that has a high luster. It has the highest carbon content, the fewest impurities, and the highest calorific content of all types of coal (compared to bituminous coal and lignite). more like this
notation
01.01.05.01.01.01 more like this
Anthr more like this
source http://en.wikipedia.org/wiki/Anthracite more like this
type
Resource
Concept
broader coal
narrower anthracite
in scheme commodity code
is primary topic of anthracite