ADIRONDACK MAGNETIC IRON ORES 99 



been worked to a depth of 260 feet and for a length of 500 feet. 

 Regarding the other deposits, he states: "The four veins upon 

 the Arnold hill are in proximity to each other, being separated by 

 a few feet of rock. The width of the black vein is from 3 to 11 

 feet, and that of the gray veins from 2 to 8. The quality of the 

 ore furnished respectively by each is very similar and the products 

 of reduction nearly the same; preference, however, is given to the 

 old blue vein." Some 800 feet west of this group there is a fifth 

 vein which has been opened in a small way. The ore is reported 

 to have been of poor quality. 



The Finch pit south of the foregoing is probably on a continua- 

 tion of the same deposits. It has been sunk through several feet 

 of drift, which has caved and nearly filled the opening. The ore 

 is mostly unaltered magnetite. The depth of the pit is about 75 

 feet. 



The Chalifou pit is a small prospect a mile and a half southeast 

 of the Finch on a different horizon from the Arnold hill group. 

 The ore is reported to have a thickness of 8 to 12 feet. 



Of the analyses given below, No. 1 has been taken from May- 

 nard's paper already quoted and relates to ore from the Indian 

 mine which lies high upon the ridge. No. 2 which is quoted from 

 the same source represents a sample from the Finch pit. Both 

 analyses are by Maynard and Wendell. No. 3 is an analysis of 

 ore from the Chalifou pit, supplied by Mr S. Le Fevre. 



Fe 2 3 69.99 



FeO 8.87 



Si0 2 14.60 



Ti0 2 



S .24 



p A 07 



A1 2 3 3.67 



MnO 38 



CaO 1.90 



MgO tr. 



99.72 



Ir °n 55-9i 



Phosphorus .03 



Manganese .28 



Titanium 



2 



3 



81.65 



45-45 



7.87 



21.26 



5.60 



22.38 





.49 



.24 



•045 



•45 



•43° 



2 . 12 



4.76 



tr. 



.16 



1.56 



2 . 22 



.67 



1-95 



100. 16 



99-145 



63.27 



48.35 



. 196 



.188 





. 122 





• 2 95 



