9 6 



ALASKA GEOLOGY 



Mineral. Occurrence. 



Silicified wood In tuff 

 Sphalerite In copper ore 



Sphalerite 



Staurolite 



Tremolite 

 Zoisite 



In copper ore 

 In gold ore 



In mica schist 



(boulder) 



In limestone 



In limestone 



(boulder) 



Locality. 

 Unga Island 

 Landlocked Bay, Prince William 



Sound. 

 Virgin Bay, Prince William 



Sound. 

 Latouche Id., Prince William 



Sound. 



Banks Island, B. C. 

 Apollo mine, Unga Island. 

 Cordova Bay, Prince William 



Sound. 

 Hugh Miller Inlet, Glacier Bay. 



Reid Glacier, Glacier Bay. 

 Hugh Miller Inlet, Glacier Bay. 



