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ALASKA GEOLOGY 



Mineral. 

 Actinolite 



Amethyst 



Asbestos 

 (chrysotile) 



Albite 



Arsenopyrite 



Calcite (crys- 

 tals) 



Chalcedony 

 Chalcopyrite 



Dolomite 

 Epidote 



Galena 

 Garnet 



Garnet 

 Glaucophane 



Catalogue of Minerals 



Occurrence. Locality. 



In schist Gold Creek, Juneau. 



Pegmatite boulder Shore of Yakutat Bay. 



With copper ore Banks Island, B. C. 



In lava Hall Island, Bering Sea. 



In serpentine Treadwell mine, Douglas Id. 



Vein in diorite 

 In quartz vein 

 In lava 



In porphyrite 



In lava 



u 



In copper ore 

 In gold ore 

 In copper ore 



In gold ore 

 Vein in diorite 

 Cavities in por- 

 phyrite 



Veins in granite 

 Veins in schist 



In aplite 



In limestone 



Limestone boulder 



In copper ore 



In gneiss 



In quartz -schist 



Uyak Bay, Kadiak Island. 

 St. Matthew Id., Bering Sea. 



Stepovak Bay. 



Hall Island, Bering Sea. 



Popof Island. 



Banks Island, B. C. 



Treadwell mine, Douglas Id. 



Landlocked Bay, Prince William 



Sound. 

 Virgin Bay, Prince William 



Sound. 

 Latouche Island, Prince William 



Sound. 



Apollo mine, Unga Island. 

 Treadwell mine, Douglas Id. 

 Stepovak Bay. 



Sturgeon Bay, Kadiak Id. 

 Gold Creek, Juneau. 

 Landlocked Bay, Prince William 



Sound. 



Apollo mine, Unga Island. 

 Lowe Inlet, B. C. 

 Reid Glacier, Glacier Bay. 

 Hugh Miller Inlet, Glacier Bay. 

 Banks Island, B. C. 

 Farragut Bay. 

 Moraine, Hubbard Glacier, 



Yakutat Bay. 



