Found in Michigan cone shaped stones : r/whatsthisrock

Help identify michigan rock : r/whatsthisrock

Rock & Fossil Hunting in Southwest Michigan

Michigan stones Lake michigan stones, Petosky stone, Stone

found in LP of Michigan… : 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

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

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

Lake Michigan rock. Having a hard time identifying the green rocks. : r/ whatsthisrock

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

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