I hail from the other side of Phoenix - The Southeast Valley, Queen Creek to be exact. I'm an hour and 15 minutes from Buckeye on the I-10 to the 60 eastbound.
There is a rock shop owned by an elderly gentleman in Gilbert AZ about a 20 minute drive from me. I want to say his business is called "Natural Expressions," but my Memory right now eludes me. I've been there a few times with my friend Gina looking at rough and buying cabs. However it's been a couple years since I was last there and Gina recently mentioned that whenever she has gone by there he has been closed. Best to look him up and see if he changed his hours or decided to close up shop.
If you are willing to drive an hour out past me, head out to Globe. Rumor has it you can enter some of the mines there with permission from the owners and hunt for Chrysocolla, Malachite and Azurite. I would do some research on this before heading out there, that would be about a two hour drive for you.