42 BULLETIN 131, UNITED STATES NATIONAL MUSEUM 



134. Seven Devils — Continued. 



Min. Res. 1898 (20th Ann. Rept., pt. 6), pp. 182-184. 



1905, p. 242. 



1906, p. 267. 



1907, pt. 1, p. 312. 



1908, pt. 1, p. 435. 



1909, pt. 1, p. 357. 



Beals, Wm., jr., The Seven Devils Mining district, Idaho. Eng. Mining 



Journ., vol. 69, pp. 345-346, 1900. 

 Palache, Chas., Note on epidote and garnet from Idaho. Amer. Journ. 



Sci., vol. 8, pp. 299-302, 1899. 

 Melville, W. H., Powellite-calcium molybdate; a new mineral species. 



Amer. Journ. Sci., vol. 41, pp. 138-141, 1891. 

 Livingston, D. C, and Laney, F. B., The copper deposits of the Seven 



Devils and adjacent districts. Idaho Bureau of Mines and Geology, 



Bull. 1, 1920. 



CLASSIFICATION OF THE VALUABLE MINERALS 



Inasmuch as the present volume is primarily a mineralogical 

 compilation, no section is specifically dedicated to a discussion of the 

 occurrence of the several valuable metals which are mined in the 

 State. The available information regarding the distribution and 

 occurrence of these metals is, however, pretty thoroughly presented 

 in discussion of the occurrence of the minerals themselves. Thus the 

 gold mines of the State are discussed under native gold, since this is 

 practically the only important gold mineral. Similarly, the lead 

 deposits of the area are described under galena and cerusite, the two 

 most important minerals of the ores of that metal. As a guide to 

 assist in finding information relative to the distribution of the metallic 

 ores, the following classification of the minerals is presented, arranged 

 according to their metallic constituents. 



ANTIMONY 



Stibnite, antimony sulphide. 

 Kermesite, antimony oxysulphide. 

 Jamesonite, lead-antimony sulphide. 

 Miargyrite, silver-antimony sulphide. 

 Pyrargyrite, silver-antimony sulphide. 

 Stephanite, silver-antimony sulphide. 

 Polybasite, silver-antimony sulphide. 

 Owyheeite, lead-silver antimony sulphide. 

 Boulangerite, lead-antimony sulphide. 

 Tetrahedrite, copper-antimony sulphide. 

 Cervantite, antimony oxide. 

 Stibiconite, antimony oxide. 

 Valentinite, antimony oxide. 

 Bindheimite, lead antimony oxide. 



ARSENIC 



Realgar, arsenic sulphide. 

 Cobaltite, cobalt-arsenic sulphide. 

 Arsenopyrite, iron-arsenic sulphide. 

 Niccolite, nickel arsenide. 



