Lithophysa (Thunderegg) Photos
Cochise College
Photos of Rocks       
Igneous Rocks
Geology Home Page
Roger Weller, geology instructor                   copyright 2011

lithophysa (thunderegg), polished-A
This is a very typical thunderegg from Oregon.
The internal cavity has been completely filled with agate.


lithophysa                                                                                                                   thunderegg1

Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.