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

lithophysa (thunderegg), polished-B
In this thunderegg, the internal cavity was first lined with agate and then filled
with common white opal.


lithophysa                                                                                                                    thunderegg2

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