SUPPLEMENTAL EEPORT — HOCKING VALLEY. 



873 



ORES ABOVE THE HOEIZON OF THE BAYLEY's EUN COAL. 



The first above the coal, and doubtless the most important, is the 

 " Shawnee ore." This ore is best known from a fine development of it at 

 Iron Point, a little north-east of the village of ShaAvnee, in Perry county. 

 The elevation of the ore seam above the Nelsonville coal is probably 

 not far from one hundred feet. This is about the average of many 

 instrumental measurements, which, as reported, range from ninety-one 

 to one hundred and ten feet. There are variations in the bedding of the 

 ore, and no two measurements are exactly alike. At one exposure of the 

 ore, where it was worked in open quarry, I took the following section : 



I'T. IS- 



Yello TV clay 6 



Carbonaceous streak. 



Laminated ore 3 3 



Coal 3 



Clay. 



A few rods distant the laminated ore was two feet four inches thick. 

 The minimum thickness is reported by Mr. E. G. Pechin as fourteen 

 inches, and the maximum as four feet. In places the ore is a hard blue 

 carbonate, showing less lamination, and resembling the "mountain ore" 

 associated with the black band over Coal Seam No. 7, in Tuscarawas 

 county. The laminated ore is, where I saw it, much oxydized. In its 

 laminated structure it much resembles a black band, but is not like the 

 typical black band in being a bituminous shale highly charged with iron. 

 There are, however, sometimes thin films of coal formed by isolated frag- 

 ments of coal-forming plants buried in the ancient ferruginous mud. 

 This mud was deposited in layers; hence the lamination of the ore. The 

 ore is divided by vertical joints, and is readily split and removed. The 

 following analyses of the Iron Point ore have been made,: 



Silica 



Alnmiua 



Oxide manganese.. 

 Lime carbouate. — 

 Magnesia caibonate 



Phosphoric acid 



Sulpliiir 



Water, contained.. 

 Iron sesquioxide 



Metallic iron 



No. 1. 

 Raw Ore. 



33.44 



3.14 



O.Jl 



Trace. 



Trace. 



0.39 



0.14 



5.74 



50 03 



99,79 

 39.21 



No. 2. 

 Eaw Ore. 



6.42 



35.^7 



No. 3. 

 Calcined Ore. 



10.(0 

 6ti9 

 4. '19 

 Lime ^.35 

 Mag. 0.1 iO 

 0.58 

 0.13 



74 (JG 



100.10 



52.'36 



