New York State Museum Bulletin 



EnU 



ler the act o: 1912 



Published monthly by The University of the State of New York 



Jo. 199 



ALBANY, X. Y. 



July i, 1917 



The University of the State of New York 

 New York State Museum 



John M. Clarke, Director 



zaas^ 



THE ADIRONDACK GRAPHITE DEPOSITS 



By HAROLD L. ALLIXG 



PAGE 



Introduction 7 



ining developments 8 



Uses of graphite 10 



Description of the graphite prop- 

 erties 11 



Graphite deposits of the northern 



area 14 



Graphite deposits of the southern 



area 40 



PAGE 



The igneous rocks 123 



Concentration problems 132 



Commercial status 137 



Prospect for future production. . . 140 



Artificial graphite 140 



Origin of graphite 141 



Index 1 49 



Miror-jeiS-1500 



ALBANY 



THE UNIVERSITY OF THE STATE OF NEW YORK 

 I91S 



