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NEW YORK STATE MUSEUM 



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NOTES ON ADIRONDACK GRAPHITE DEPOSITS 



The American mine. This is the oldest Adirondack mine now 

 engaged in active production, having been continuously operated 

 for about 35 years. The graphite schist is being worked at two 

 outcrops which are due to repetition of the same beds by faults. 

 Most of the mining heretofore has been done in the northwestern or 

 main deposits which are traceable to the limits of the property, 

 a distance of one-half of a mile. The workings are entirely under- 

 ground and follow the dip of the bed to the southeast a quarter of 

 a mile. The graphite bearing rock here occurs as two distinct beds 

 separated by the garnet bearing paragneiss. The lower one, the 



