Were rock hounding the beach at the Port of Cross Village in Cross Village, Michigan. We’re finding all sorts of rocks and minerals including epidote, Unakite, feldspar, rhyolite, quartz, granite, chain coral, some Petoskey stones, and a myriad of other great rocks and minerals. Finding rocks and minerals in northern Michigan. Finding rocks and minerals near wilderness state park. Finding rocks and minerals near Sturgeon Bay, Michigan.