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is this rock anthracite

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asked Sep 12 by robuster91 (140 points)

1 Answer

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https://investingnews.com/daily/resource-investing/industrial-metals-investing/coal-investing/coal-101-what-is-anthracite/

There are some sites that can give you a better idea, but coal looks like coal. Anthracite is very hard for coal and it burns very clean. Since coal is very brittle you could break off a small piece and burn a piece on an outside grill and see if it burns pretty cleanly, like not a bunch of smoke.
answered Sep 14 by Weasel (37,800 points)
 


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