198 KEMP'S ORE DEPOSITS. 



AKIZOXA CALIFORNIA. 



2.08.30. Some $98,000 worth of lead ores were shipped from 

 Arizona in 1889, chiefly from Cochise County (Tombstone region) 

 and Pima County (Tucson region). They will be mentioned un- 

 der "Silver." Insignificant amounts are also afforded by Cali- 

 fornia (about $2000 in 1889), mostly from Inyo County. (See 

 Eleventh Census, Bull. No. 80, June 18, 1891.) 



U. S. Geol. Survey. A. Hague, " Geology of the Eureka District," Mon- 

 ograph XX., U. S. Geol. Survey. Abstract in Third Ann. Rep. Director 

 U. S. Geol. Survey. W. S. Keyes, "Eureka Lode of Eureka, Nev.," 

 M. E., VI. 344. J. S. Newberry, School of Mines Quarterly, March, 1880. 

 R. W. Raymond, "The Eureka-Richmond Case," M. E., VI. 371. C. D. 

 Walcott, "Paleontology of the Eureka District," Monograph VIII. , U. S. 

 Geol. Survey. 



