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). |  |
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| source | http://en.wikipedia.org/wiki/Anthracite | |
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| in scheme | commodity code | |||||
| is primary topic of | anthracite | |||||