Thunderegg-Adjacent Stones

Stones that are either related to thunderegg or look similar to thundereggs, or even that just happen to be other kinds of nodules and thus tickle my obsession! Stones that aren't thundereggs, yet I want the chance to explore and present them. They are useful for comparison purposes, as well as showcasing just how many different kinds of "stones with holes in" and "blobs of stuff surrounded by other stuff" there are in the world. There is nothing comprehensive about these, of course - this is just a repository for stones that I happened to acquire. Sometimes I know what they are - sometimes I don't.

See also Other Specimens for more stones that happen not to be thundereggs!

Sandstone Nodule with Quartz from Remiremont, France	Emirler Village Rhyolite Transitional Nodules	Feathery Plume Agate Mass from the Almus Dam Bed, Tokat, Turkey
Keokuk Geode with White Band	Large, Pale Black Sea Nodular Mass with Red Agate	Large Single Nodule of Yenisofça / Eskişehir Opal, Turkey
Yenisofça / Eskişehir Opal Nodule, Turkey	Green Hydrothermally Altered Basalt with Epidote from Almus Village, Turkey	Azurite Nodule/Geode
Mystery Red and White Black Sea Specimen - Possible Fern Fossil	Colourful Unknown Nodule - Very Possibly Not Rhyolite	A Pisolitic Nodule from Utah
Beautiful Septarian Nodule from Morocco	Classic Septarian Nodule from Morocco	Leopardskin Spherulitic Rhyolite
Unknown Spherulitic Rhyolite