Alligator Ridge Gold Mine is located off the road to Ruby Marshes that heads north from Hwy 50 to the east of Eureka, Nevada. It is a Gold Mine that goes in and out of production depending on the price of gold. I was lucky enough to catch it a couple of times when production was shut down and was able to collect some great Nevada Wonderstone (Ryolite) there. The best place I've come across to collect it.
Western Mining History-Alligator Ridge
RockHounding-Alligator Ridge Mine