If you have time to go to the upper Peninsula of Michigan, it is beautiful. I have done rock hounding there & did a lot of exploring in mines scrap piles.
Lake Superior shore are out of this world. Large pieces - and I mean LARGE - of granite, quartz are on the beaches.
I'm looking forward to the rocks. I can't go anywhere without bringing home rocks or shells. I even moved my rocks and sea shells from CA to MS last year. ALL of them.