The American Geologist, Vol. XXXIII. 
Plate XXV. 
Fig. 5. Thin Section of Angite-Camptonyte as seen tinder a. 
microscope between crossed nicols X 35 (Rossland 9). 
Fig. 6. 
Thin Section of Ker-saiityte-Camptonytc as seen under a 
microscope between nicols X 35 (.Rossland 49). 
