These are terrible photos taken in the dark of the woods. Can you see the blue-green coloring to the rotting wood? Its been the biggest mystery of my travels through the woods. I've spotted this on every trail, in little piles, a broken branch. At first I thought the trail-blaze paint might have made the color, but I was dubious of this. Then I thought, some kind of treated wood? Because surely it looks like a copper pigment and copper being a main ingredient in CCA treated wood. But why would there be so much treated wood and why would it be whole branches and twigs? So no to that one. It looks closest to Copper Phthalocyanine Blue/Green that I use for paint.
Is it some kind of chemical reaction or algal growth? Anyone know?
