272 P". REPORT OF PROGRESS. E. W. CLAYPOLE. 



quite out of sight and cannot be traced in the low ground 

 intervening between it and the river. But it rises again on 

 the oilier side in Watts township, and forms the fourth 

 sum mi r of Half Falls mountain. 



So far as can be determined the whole plain across which 

 Losh's run flows is underlaid by an exposure of the Hamil- 

 ton upper shales, Genessee and Portage brought up by the 

 double line of fault described above. 



The Hamilton fossil ore. ( VIII.) 



A good outcrop of this ore crosses the township along the 

 south slope of Mahanoy ridge from Pine Grove narrows to 

 the Juniata river. It has been mined at several places and a 

 great quantity of ore taken out. Abandoned workings may 

 be seen along the road from Pine Grove to Losh's run, es- 

 pecially on the ground of Mr. G. Peterman and Mr. P. 

 Cook. The bed of ore at the former place is said to be be- 

 tween two and three feet thick, and was mined for some 

 distance under cover more than ten years ago, (written in 

 1883.) A considerable quantity of ore was taken out and 

 sent to the furnace at Duncannon, but with the fall in the 

 price of iron the mine became unrenumerative, and the two 

 drifts are now wholly or partly fallen in. The difference in 

 quality between the two parts of the bed at this outcrop is 

 well shown by the following analyses made by Mr. A. S. 

 McCreath : 



Sesquioxide 

 of iron. 



Top bed of ore, 44.1 



Middle division, 33.4 



Bottom (fossil) layer, . . . 40.7 



These figures show that the ore is a very silicious brown 

 hematite, especially near the base. This might be expected 

 from its proximity to the sandrock. As a whole it yielded 

 about 27 per cent, of metallic iron. 



The usual fossil <>l' the ore bed and Paracycles shale may 

 be found on the spoil-bank, but greatly damaged by long 

 exposure to weather. 



lumina. 



Siliceous 





matter. 



9.3 



34.0 



12.1 



44.6 



3.7 



48.9 



