Smithsonian Miscellanehus Collections 



Vol. 45. I'L. l: 



Hypersthene Akerite 



unm 



Unakite 



Olivine Basalt 



Granite 



MAP SHOWIN(; DISTRIBUTION OF UNAKITE AND ASSOCIATED ROCKS NEAR LURAV. VIRGINIA. 

 (Base map from the Luray sheet of the U. S. Geological Survey.) 



