I found this down by the Delaware river in Easton Pa. I was told that could be Azurite. It has purplish blue and green characteristics . Any info would be appreciated
sorry, but there is no azurite to be found anywhere near where you found that. id say it was a chunk of cobalt glass slag, from one of the old bottle manufacturers that used to be along the Delaware river near Easton. most likely Phillips milk of magnesia.
Azurite? Who can say for sure? If azurite, probably not from the area, but rather brought in by someone. Lots of people there, so could be.
Don't think this is from cobalt-blue glass either. Or it has been heavily weathered. The white crusty stuff does look like an azurite-associated mineral to me, but I don't remember what it's called.
If azurite, it should fluoresce under UV light or black light. If you know someone who has such a light, any color change would be both significant and probably help with identification.