High in the Mountains of Colorado, I found a creek that has a 6 foot high bank on one side it consists of 6 inch round rocks and a black very hard material possibly volcanic ash? It will crumble if hit with a pick but is very tough, there is maybe 12 to 24 inches of sandy clay on top. I tried to pan the sandy clay layer and have found no gold or black sand just blond sand in pan.
There has been much mining just above here, could this be spent coal from the steam engines they used to operate the processor?
I don't know what Colechy is. Thoughts on this, anyone.