I'm thinking my book from University of Arizona, Bureau of Mines publication on mining history mentions Lynx Creek. I got the Arizona mining book from them back in the 1990s. Actually it was 2 books, covering placer mining in one and lode mines in the other. A few claims produced some huge monster nuggets. Lynx Creek, it might of had a spot where bedrock was shallow and mostly a fringe area. Been so long since reading the info, hope my memory is correct.