Does anybody know which coil would work best in mineralised ground. Which one would find the smallest gold, maybe the detech, being smaller. I know the detector (Safari) is not a gold machine but I wanted to give it a try down at the goldsfields in Victoria, Australia on mulloch heaps.. I wanted to use it mainly for the discrimination as my only gold machine (GT 16000) has poor discrimination. Will eventually get an Eureaka Gold, maybe.