I was looking at some rocks I dug out of vein outcrop. Across the opening of a little vug was what appeared to be very thin, flattened metal. About a 1/4 inch long, with another smaller one behind. Under a lens it looks like little flat pieces hammered together. Middle part looks a little golden under film on it, but the ends are a silver color. I don't think anything other than a metal could be that thin and solid. Any ideas?