38 NEW YORK STATE MUSEUM 



the section included herewith has been prepared. A notable 

 feature shown in the section is the horse of rock which splits the ore 

 body into two seams. The horse thickens to the northwest, reduc- 

 ing the ore breast proportionately, so that the limit of profitable 

 working was soon reached in that direction. On the southeast only 

 the hanging seam 10 to 15 feet thick has been exploited. 



The Podunk mine on a parallel ore body is bottomed at 300 feet. 

 There are several hundred feet of drifts extending horizontally 

 from the slope. The ore breast is said to have averaged 8 feet. A 

 third opening called the Baker has been made on a deposit west of 

 the Potter mine. It has produced only a few hundred tons. The 

 dumps at the Potter mine contain possibly 2000 tons of waste ore 

 that evidently carried too much pyrite to be shipped to the furnace. 

 The sulfur has been oxidized to a great extent and washed out by 

 long weathering so that the material might now be valuable. This 

 ore came from a zone specially rich in pyrite ; most of the output 

 was sufficiently free from this mineral to be merchantable. Chemi- 

 cal analyses indicate a phosphorus content that meets the Bessemer 

 requirement. Of the following, which have been communicated 

 by Mr S. R. Potter, No. 1 relates to a sample from the Potter mine 

 and No. 2 to a sample from the Baker opening. 



Fe 2 3 . /. 49 • 00 41-3° 



FeO 21.98 18.47 



Si0 2 23.10 35.22 



Ti0 2 nil 



S 22 



P 2 s 014 .05 



A1 2 3 3-7o 1. 61 



MnO .09 .42 



CaO 1.39 .45 



MgO 3.14 



99.494 100.66 



Iron 51.46 43-3° 



Phosphorus . 006 . 02 



Manganese .070 .32 



Mt Hope mine. The ore belt continues in the direction of the 

 strike northwest from the Potter mine and after an interval of a 

 little more than half a mile outcrops along the ridge known as Mt 

 Hope. According to published accounts ore was mined here 50 

 years ago. The last period of activity was from 1879 to 1881, when 

 15,000 tons or more were taken out and mostly stacked at the mine. 



