I am purchasing an unpatented gold claim on the North Forks of the Salmon River in northern CA (Siskiyou County). When not dredging I will be detecting for gold nuggets. This will be only my second detector (First is a White's XLT I have had for many years). The new MD will be used exclusively for gold nugget hunting on this claim. I am considering the MineLab 4500. Is this area highly mineralized with hot rocks? Will a PI detector be best for this area? Any suggestions are greatly appreciated. I am truly a "newbie' at detecting even though I do have the XLT. With a new detector would there be any reason to take a VLF detector with me or just leave it at home for relic hunting? Thanks.