There are lots of areas in LaPaz that has gold fields or nugget patchs.
If your into the club thing, you can try the Havasu Gold Seekers club. They have a lot of claims up there.
If your into the meteorite thing, they are also close to a field. Good camping at their site, even a shower house. If your a member it cost a dollar per night to camp in the camp grounds, or you can camp on the claims for free. Bob T