SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 

 Bulletin 131 







THE MINERALS OF IDAHO 



BY 



EARL V. SHANNON 



Assistant Curator of Geology, United States National Museum 





^^£•.....••52^ A*- 



.£• (4710111 *^ 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1926 





