IRON ORES OF THE CLINTON FORMATION 69 



region. It has been worked .from the outcrop back into the face 

 of a low hill over an area of more than an acre. There has been 

 no work done for the last 40 years. An analysis of the ore is here 

 given. 



Fe 38.87 



SiO, 3.45 



MnO 25 



S 018 



P 374 



Town of Huron. Plematite is reported to outcrop on lot 339 

 but has not been worked. 



Town of Sodus. There is an old working on Salmon creek, 

 near the mouth, but apparently very little ore has been taken out. 

 Hall states that operations were abandoned before 1838. 



Openings in town of Ontario. This township has yielded 

 most of the ore output from the western section of the Clinton belt. 

 The workings extend almost continuously across the whole width of 

 the town, between 5 and 6 miles, and for as much as ^ mile back 

 from the outcrop. The bed passes into the town of Williamson on 

 the east where it maintains its average thickness for at least 2 miles 

 farther, but has not been opened. The line of workings lies about 

 3 miles south of Lake Ontario and ^ mile north of the R. W. & O. 

 Railroad tracks. The ore belongs to the fossil variety, averaging 

 about 20 inches thick. It occurs below the Pentamerus limestone, 

 which reaches its maximum in this section of the State. 



The Furnaceville Iron Co. owns extensive properties along the 

 ore outcrop from Ontario village westward. At present the strip 

 from Ontario to Ontario Center is under exploitation. The com- 

 pany has been active for many years and its methods of excavation 

 and extraction of the ore have been perfected to a degree rarely 

 seen in such work. At the present time a little more than 20 feet 

 of rock and soil are removed from above the ore bed. The work- 

 ings are connected by a branch railroad with the main line at On- 

 tario Center. The ore is shipped to Emporium, Pa. Its compo- 

 sition is exhibited by the following analyses, of which no. i has 

 been reported by Mr W. L. Cumings and no. 2 has been taken 

 from Putnam's report. 



Fc 44- T2 41 .46 



SiO, 1 1 • 74 



AlA 48 



