BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 2, pp. 125-140. 



THE NICKEL AND COPPER DEPOSITS OF SUDBURY 

 DISTRICT, CANADA 



BY 



ROBERT BELL, B. A. SC, M. D., LL. D. 



ASSISTANT DIRECTOR OF THE GEOLOGICAL SURVEY OF CANADA 



With an Appendix on 



THE SILICIEIED GLASS-BRECCIA OF VERMILION RIVER, SUDBURY 



DISTRICT 



BY 



GEORGE H. WILLIAMS 





ROCHESTER 



PUBLISHED BY THE SOCIETY 



February, 1891 



