Found in Michigan cone shaped stones : r/whatsthisrock

What is this strange rock formation? Has like an elongated honeycomb pattern. : r/whatsthisrock

found in LP of Michigan… : r/whatsthisrock

What kind of rock is this? Found in Lake michigan : r/Rocks

Need help identifying grey purple rock found at Lake Michigan beach : r /rockhounds

What are these yellow rocks? Found in Lake Michigan near Manistee, MI : r/ whatsthisrock

Found in Michigan : r/whatsthisrock

Identifying the Rocks of Lake Michigan (Geode, Septarian, Agate, and More)

55 Michigan Rocks ideas rocks and minerals, rocks and gems, gems and minerals

Identifying the Rocks of Lake Michigan (Geode, Septarian, Agate, and More) - Owlcation

Identifying the Rocks of Lake Michigan (Geode, Septarian, Agate, and More) - Owlcation

Does this look like a stone tool? Found in Redcliffe, Australia. : r/ whatsthisrock

Vesicular Rocks (1lb), Rocks with holes, Lake Michigan rocks – Midwest Shores

Could someone tell me what this is? I find them a lot in one particular creek in Gallatin, Tennessee. Most of them have a solid black core, and they're all kinda cone shaped : r/whatsthisrock