Coal, maybe?

[Tuberale]

Fd. this in WA recently. Light for the size, and only slightly heavier than many kinds of wood of a similar size. Writes on paper, so fairly soft.

Could this be coal? Does coal have a nearly irridescent sheen?

Forgive my questions, but coal is nearly impossible to find in Oregon, and only slightly more common in WA. I don't know that I have ever personally found any before.

BTW, there was a slab about 4 feet by 2 feet nearby which had the same black sheen to it.

 

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[marinedad]

could be coal, chip off a piece, take it outside and try to burn it with a torch.

 

[Eu_citzen]

Does it colour your fingers greyish just by gently rubbing it?
Could be graphite then.

 

[Tuberale]

Thanks for the help!

Doesn't come off on my fingers or hands while handling it, but does easily write on paper, as easily as a pencil.

I will try burning a little of it in a blow-torch and see if it ignites quickly.