90 F\ REPORT OF PBOORE8S. E. W. CLAYPOLE. 



(117) (118) 



Sesquioxide of iron, 78.571 73.714 



44 " manganese, 021 .021 



Alumina, 4.927 5.702 



Lime, 510 .390 



Magnesia, 213 .209 



Sulphuric acid, 042 .050 



Phosphoric acid, 1.502 1.784 



Water and organic matter, 6.015 9.075 



Siliceous matter, 8. 170 8. 870 



99.971 99.815 



Metallic iron, 55.000 51.600 



Metallic manganese, 015 .015 



Sulphur, 016 .020 



Phosphorus, 656 .779 



Phosphorus in 100 parts iron, 1.192 1.509 



This bed is mined at and near Millerstown, but nowhere 

 else in Perry county, though indications of its presence are 

 not wanting in many other parts. It apparently accompa- 

 nies the ore sandrock in its various outcrops, and shows 

 itself in the valleys in the west. In Kennedy's valley es- 

 pecially there is unquestionably an abundant supply of rich 

 ore along the ridges near the face of the sandrock. All this 

 is however a store for the future, since it is in the present 

 state of transportation valueless. 



Further details concerning these Clinton ore beds will be 

 found in the report on Greenwood andTuscarora townships. 



2. The Marcellus brown hematite. 



The second iron-bearing horizon in Perry county lies at 

 the base of the Marcellus black shale and on the top of what 

 has sometimes been regarded as the representative of the 

 Corniferous limestone of New York, but what 1 consider 

 only a calcareous bed belonging to the Marcellus.* 



This ore is not a fossil ore like that at Millerstown, but 

 a concretionary limonite,f called locall} r a w r ash ore, because 

 occurring as it does in a bed of clay it needs washing to fit 

 it for the furnace. Its form is usually pseudo-stalactitic, 

 lying in horizontal masses with stalactitic appearance. It is 



*It is extensively mined <>n the Juniata in Mifflin county, on Yellow creek 

 in Bedford county, and elsewhere. fi. e. brown hematite. 





