Commodity Code

black coal

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

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bituminous coal more like this
star this property definition Bituminous coal or black coal is a moderately hard coal containing higher carbon and fewer impurities than lignite coal but of poorer quality than anthracite. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the seams. These distinctive sequences, which are classified according to either "dull, bright-banded" or "bright, dull-banded", is how bituminous coals are stratigraphically identified. more like this
star this property notation
01.01.05.01.01.02 more like this
BlcC more like this
star this property source http://en.wikipedia.org/wiki/Black_coal more like this
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Resource
Concept
star this property broader coal
star this property narrower black coal
star this property in scheme commodity code
star this property is primary topic of black coal& properties=altLabel