Il6 NEW YORK STATE MUSEUM 



tite, this mineral then formed in No. i, 83 per cent of the mass; 

 in No. 2, 84 per cent. In the sample and undetermined there was 

 more than five per cent of CaO, and probably a little Na20, 

 attributable to the green pyroxene often observed in the ore. 



The analyses below, taken from the Iron Age of December 17, 

 1903, show the composition of the crude Old Bed ore and the 

 products made by its concentration at the milling plant of 

 Witherbee, Sherman & Co. No. i represents the crude ore, No. 2 

 the magnetic concentrates, No. 3 the first grade apatite product 

 made by retreatment of the tailings from the first concentration, 

 and No. 4 the second grade apatite product. 



.1 2 34 



Iron 59.59 67.34 3.55 12.14 



Phosphorus i-74 .675 12.71 8.0^ 



Bone phosphate 63.55 40-30 



Harmony mines. The most recent developments at Mineville 

 are the two Harmony shafts, A and B, which were sunk 5 or 6 

 years ago in order to tap a bed of ore revealed by the dipping 

 needle and the drill to the south and somewhat to the west of the 

 Joker workings, and at a much higher horizon. The Harmony bed 

 strikes northwest and dips southwest at a rather flat angle. It is 

 10 to 20 feet thick and is cut by at least 3 narrow trap dikes with 

 a strike a few degrees east of north and a vertical dip. They fork 

 somewhat and are not absolutely continuous. The dikes occupy 

 small faults of 10 to 50 feet displacement and strike in a direction 

 to suggest that they are the same as the two in the Miller pit. 



The relations of the Harmony ore to the Joker on the one side 

 and the Barton Hill gfoup on the other are interesting. Our last 

 section of the Joker is 500 feet above Lake Champlain, while the 

 outcrop under the drift of the Harmony bed, 400 or 500 feet away, 

 is 450 feet higher. If the latter is the prolongation of the former 

 there is a very great fault in the interval. On the other hand, if 

 we attribute to the Barton Hill group a swerve to the eastward 

 under the cap of drift, there is a very strong probability of con- 

 necting up with the Harmony bed. There is unexplored ground 

 in between with evidence of some disturbance. The composition 

 of the Harmony ore as regards phosphorus is intermediate between 

 the Barton Hill and the Joker. It is higher than the former and 

 lower than, the latter. The percentage in iron is somewhat less 

 than the Joker. 



