I believe wreckage from a galleon on the bank actually made it all the way to andros, and this may have some bearing on the name....there are many gold key, cays, and rocks !! I wonder about name origins for all of them. One down here in the Florida keys has had the name removed from modern charts, and gold key is only known to a few of us from older map sources !! Most keys, cays, islands, and rocks get there namesake from past events and history, so anything with a gold connotation is worth a check !!