>>33606What you see on top is slag, melted sulphides that float to the top (Because of gold's high specific gravity). Those are the pyrites, chalcopyrites, aresenopyrites, pyrrhotites that you'll see in the field. Honestly, a lot of the shiny stuff when you're on a thick, old stable plutonic craton. Great indicators if you're prospecting! Speaking of which, anyone got a prospectors license?