Found in Michigan cone shaped stones : r/whatsthisrock

What is this sea shell like shape in the rock? Found in Baltic sea : r/ whatsthisrock

Please Help Identify. Can Not Find Anything Like It? - Page 3 - Rocks, Minerals, Gems & Geology

Colorado Earth Science: The Michigan Puddingstone

Found this porous-feeling rock with inclusions of something pinkish-peach in Lake Superior : r/whatsthisrock

Geopic of the week: Cone in cone structure

Found this cool rock on the coast of Lake Michigan while on I

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

Found this by the river, what is it? : r/whatsthisrock

Frank Festa - 7. Cone in Cone Structures - the Geologic Mystery

Found in Michigan. What is this? : r/whatsthisrock

Please Help Identify. Can Not Find Anything Like It? - Page 3 - Rocks, Minerals, Gems & Geology

Found in Michigan : r/whatsthisrock