Il8 NEW YORK STATE MUSEUM 



outcrop and about one-half of a mile distant from these. They 

 are based on a thin but persistent band of magnetite that lies nearly 

 flat and outcrops on the southern and southwestern sides of the 

 hill. The ore is of Bessemer grade, whereas the Lake and Craw- 

 ford mines contain too much phosphorus to come in that class. 

 The California ore band reappears on the northwest side of the 

 ridge where it has been worked through the Tiptop mine. 



The Sterling and Lake mines, of which the latter is now the only 

 active producer on the property, are opened on two long lenses or 

 shoots which outcrop on the side hill at the foot of the lake and 

 extend north under the latter at an angle of 28° for the Sterling and 

 23° for the Lake body, measured on the average inclination of the 

 respective slopes. Both dip to the east, although rolls occur which 

 locally reverse the normal dip. The Sterling mine is down 1000 

 feet and has not been worked since 1902. The Lake slope is over 

 3200 feet in depth. The two slopes are 500 feet apart at the surface 

 and pursue a slightly divergent course. From the presence of 

 numerous pinches and minor rolls in the Lake mine, it might be 

 reasonably maintained that the two bodies are parts of one original 

 deposit which has been squeezed out into the present form. It 

 has been the prevalent opinion, however, that they are separate 

 and distinct deposits, and the Lake, if it were continued on the 

 dip, would lie above Sterling deposit. For a distance of 2300 feet 

 on the slope, granite forms the hanging wall of the Lake slope, but 

 at that depth gives way to hornblende gneiss. The Lake mine has 

 yielded over 1,500,000 tons of shipping ore up to the present time. 

 The ore runs about 57 or 58 per cent iron and i per cent or so of 

 phosphorus. 



To the east of Sterling lake about 5000 feet is a series of lenses 

 that lies along a nearly north-south axis, on which are located the 

 Cross way. Mountain and Smith mines. They are within the town 

 of Tuxedo but close to the Warwick line. About 800 feet farther 

 east a second series, with openings known as the Augusta, Cook, 

 Scott, Oregon and Long mines, occurs along a parallel axis measuring 

 6500 feet from south to north. They all have an easterly dip and 

 northerly pitch and have been worked by open cutting or by drifting 

 under cover. The Cook mine, however, was worked through a 

 vertical shaft and had underground connections with the Scott 

 deposit, which also was tapped by a slope. There is little of the 

 early workings in this part now accessible, but the ore as seen in 

 places near the outcrop measures up to 25 feet thick. 



To the south and east of the Augusta, higher up on the ridge 

 which lies across the town line and near Tuxedo lake, is the Redback' 



