136 



NEW YORK STATE MUSEUM 



Fe 3 4 49 



FeS 2 



Si0 2 



Ti0 2 



P 2 5 ...... 



A1 2 3 



MnO 



CaO 



MgO 



K 2 



Na 2 



co 2 



HO 



Iron 



Phosphorus , 



Sulfur 



Manganese . 

 Titanium. . . 



49 



43 



1 



61 



33 



3 2 



1 



07 





•43 



6 



92 





3 2 



1 



42 





9i 



2 



77 





58 





68 





35 



99 



81 



36 



56 





186 





86 





246 





64 



88 

 5 



2 



08 



864 



97 



2 

 2 



.086 

 26 

 04 

 28 

 18 















99 



76 



64 



18 



o37 

 461 



158 



85 



94 



5 



9i 



1 



06 





11 



3 



63 





43 





68 





08 





87 





42 





42 



99 



55 



62 



24 





048 





37 





33 





64 



It will be observed that the ore in its crude state is not of Besse- 

 mer grade. « The concentration, however, eliminates sufficient 

 phosphorus so that the product can be used for Bessemer pig. 

 As a result of the milling operations it was found that the quantity 

 of phosphorus passing into the concentrates could be regulated to 

 some extent by the crushing. With fine crushing the apatite 

 which carries the phosphorus is mostly released and under the 

 magnetic treatment goes into the tailings. 



Of the shipments made in the first period of operations, a large 

 part averaged over 60 per cent iron with less than .03 phosphorus. 

 The coarser concentrates carried as high as .47 per cent phosphorus. 

 In the last campaign in 1900 and 1901, the product of some 70,000 

 tons averaged from 63 to 64 per cent iron, about .037 per cent 

 phosphorus and .46 per cent sulfur. The concentrates were used 

 by Pennsylvania furnaces for Bessemer and foundry irons. 



The following analysis is of interest as showing the chemical 

 constituents of the gangue, which may be considered closely analo- 

 gous in all respects to the country rock. It was made from a 

 sample of mill tailings produced during the regular course of 

 operations. 



