Concluding the discovery of the bone, I found these rocks.


NOTE : There used to be a old Iron mine nearby.
NOTE : Some of them had the luster and were duller looking.
I've narrowed them down to what they could be
. Slag from refined Iron (Slag occurs when you melt any type of metal, it's a stony waste matter)
. Anthracite coal.
. Some form of carbon
I wonder what these are.