New York State MuseuM Biilletin 



Entered as second-class matter November 27, 1915. at the Post Office at Albany, New York, 

 under the act of August 24, 1912 



Published monthly by The University of the State of New York 

 No. 201 ALBANY, N. Y. SEPTEMBER i, 1917 



GENESIS OF THE ZINC ORES OF THE EDWARDS 

 DISTRICT, ST LAWRENCE COUNTY, N. Y. 



By C. H. SMYTH, JR 



INTRODUCTION 



Several years ago, while examining the geology of the Canton 

 quadrangle with Mr J. C. Martin, the writer made a brief visit 

 to the Edwards zinc mine which, at that time, consisted of little 

 more than a few shallow prospects. The data and specimens then 

 collected were laid aside in the hope that some further and more 

 favorable opportunity for a study of the deposits might be forth- 

 coming. 



Subsequent rapid development of the district led Mr D. H. New- 

 land, assistant state geologist, to give it a thorough examination 

 and the chief results of this work were stated in a paper published 

 by him. 1 



In a correspondence growing out of this publication, Mr Newland 

 suggested that the writer join him in the preparation of a report 

 on the district, intended primarily for those interested in its mining 

 development, and the present paper has resulted from this sug- 

 gestion. Its appearance as a separate contribution, long subsequent 

 to the publication of Mr Newland's report, 2 is due primarily to the 

 exigencies of the war situation, and is most regrettable. 



While availing himself of his acquaintance with the geology of 

 the region within which the Edwards district lies, as well as the 

 data and specimens collected in the visit to the mine, above referred 

 to, the writer has depended primarily upon the data and collections 

 generously placed at his disposal by Mr Newland, thus incurring a 

 debt which' is gratefully acknowledged. 



1 Newland, D. H., The New Zinc Mining District near Edwards, N. Y. ; 

 Econ. Geol. 1916, 1 1623-44. 



2 Newland, D. H., The Zinc-Pyrite Deposits of the m Edwards District, 

 New York; N. Y. State Defence Council, Bui. 2, 1917. 



