Welcome to TNet! IMHO, from the pics, I really don't see much in the way of Agate except the possibility of some Milk Agate. I see fairly common Quartz, Quartz Crystals, Chert and what appears to be Ironstone. I am sure that there are more I just can't identify. To be honest, the rocks look ripe for crushing and panning for Gold because these are some of the rocks that Gold Prospectors hope to find.