HIC PR/EMIUM COMMERITUM 



METALLICO PURO DATUM E.ST 



THE ALASKA-TREADWELL MINE 



NOTES ON THE GEOLOGY OF THE MINE 

 AND VICINITY 



BY CHARLES PALACHE 



Several days were spent in studying the Treadwell 

 mine and its vicinity and the canyon of Gold Creek back 

 of Jimeau. Thanks to the courtesy of the superintendent 

 of the mine, Mr. Corbus, every opportunity was given me 

 to see the mine workings, both above and under ground, 

 and I take pleasure in expressing to him here my thanks 

 for his many services. 



The Treadwell mine was very fully described by Mr. 

 Becker, 1 who discussed the nature of the somewhat un- 

 usual rocks in which it is located, and the probable se- 

 quence of geologic processes leading to its formation. 

 My opportunities for the study of the mine did not suffice 

 for more than a hasty survey of the ground, and anything 

 that I may be able to add to Mr. Becker's description is 

 concerning the newly opened parts of the mine, which was 

 very rapidly developed between the time of his visit, 1895, 

 and my visit in 1899. 



1 i8th Ann. Rep. U. S. Geol. Survey, Pt. in, p. 64. 1898. 



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