Basalt Photos
Cochise College
Photos of Rocks       
Igneous Rocks
Geology Home Page
Roger Weller, geology instructor                   copyright 2011

basalt, scoria-5
A very unusual scoria with extremely large vesicles and little basalt. 
Holes average more than 1 centimeter in width.

basalt-scoria                                                                                                                                  2123
Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.