Argillite Photos
Cochise College        
Photos of Rocks       Metamorphic Rocks
Virtual Geology Museum       Hall of Rocks

Geology Home Page              

Roger Weller, geology instructor

wellerr@cochise.edu    copyright 2007-R.Weller

argillite, variety catlinite-A
Sioux Falls, South Dakota
Catlinite is also known as pipestone.
 

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