Dacite pits south of Riley are a great choice for large superb rock. As for glass buttes type in glass buttes map on google images. Look over those and you’ll do well. It’s a good few miles from the hardball till the serious picking. Stay left at the pond by the camp. The big butte is a waste, little butte is all obsidian. At the camp(flat by the roadside by the pond) the hillside has gold sheen. I’ll get a few pictures for ya. Posting it here rather than pm so others know. Bring a pry bar as those are the best tool there.