Found in Michigan cone shaped stones : r/whatsthisrock
55 Michigan Rocks ideas rocks and minerals, rocks and gems, gems and minerals
Vesicular Rocks (1lb), Rocks with holes, Lake Michigan rocks – Midwest Shores
Strangely shaped rock found on Lake Michigan : r/whatsthisrock
What are these shapes in my rock? Find in Neuville formation, Qc, Canada : r /whatsthisrock
Found in a river in northern Michigan, cut it at home. : r/whatsthisrock
Rock found on the southern shore of Lake Michigan. It has a strange swirl pattern that looks metallic in spots but is non-magnetic. Thanks in advance! : r/whatsthisrock
Beachgoer's Guide to Lake Michigan Fossils and Rocks - Field Museum
What kind of rock is this? Found in The Upper Peninsula of Michigan : r/ whatsthisrock
Identifying the Rocks of Lake Michigan (Geode, Septarian, Agate, and More) - Owlcation
Found in Michigan : r/whatsthisrock
Identifying the Rocks of Lake Michigan (Geode, Septarian, Agate, and More)