146 KEMPS ORE DEPOSITS. 



2.04.20. The ores are classified by Henrich as follows : 



1. Contact deposits. These occur in a zone of decomposed and; 



UOMOFELUOW 



FIG. &. Vertical section of Longfellow Hill, Clifton district, Arizona. 

 After Wendt, M. E., XV. 52.; 



FIG. ^.-Horizontal sections of Longfellow ore body. After Wendt. 



kaolinized porphyry, between a bluish, fine-grained limestone, and 

 solid porphyry. Many ore bodies, and probably the largest, are 



