Many people pan for gold every year, but few ever wonder where the source is that the gold came from. Those who do wonder often do not know how to find out. However, there is a method to prospect for gold with the use of a black light. While gold itself is not fluorescent and does not show up under black light, many materials that surround gold are, and these materials are what will allow you to use your black light to find the source.
Pan for gold in a creek known for having a high amount of gold. Once you remove the excess rocks and minerals you will get down to the black sand and gold. Use a magnet to remove the black sand.
Cover yourself with the blanket so that no outside light comes in. Shine the black light on the magnet and sand. The minerals that glow under the light are the minerals that surround gold around its original source.
Move up the creek and continue testing the black sand under the black light. The more glowing you see in the sand, the closer you are to the original source.