RE:Granite ?Still can't tell if you are serious or just an idiot - feldspar as a pathfinder mineral for gold? ... feldspar makes up around 50% of the Earth's crust?? That's as stupid as your suggestion to mien float boulders in case they have gold and your staement that muscovite is a rare form of mica when it is literally the most common.
Are you trying to be funny?