THE ALASKA-TREABV/ELL 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 Juneau. 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 18th Ann. Rep. U. S. Geol. Survey, Pt. hi, p. 64. 1898. 
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