Thomsonite Photos           
Cochise College               
Photos of Minerals
Virtual Geology Museum      Hall of Minerals

Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu    copyright 2008-R.Weller

 
thomsonite in basalt-1
The mineral filling the vesicles in the basalt is thomsonite, a zeolite with a radiating
structure. As the lava is weathered, the thomsonite nodules show up as beach
pebbles along the western shore of Lake Superior.
 

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