39 



Teaho Mine, near Dover. 



Description. — Ore, magnetic, compact, slightly granular, fracture 

 irregular ; lustre, brilliant, metallic. Contains dispersed grains 

 of hornblende and vitreous felspar. 



Specific gravity. — 44-82 at a temperature of 69° Fahr. 

 Composition. — Aletallic iron, - G4-9 per cent. 

 Insoluble matter, - 6-2 do. 



Lime and alumina, a trace. 



Mount Pleasant Mine, near Dover. 



Description. — Ore, magnetic, compact and massive ; somewhat 

 granular ; grains less than the average size ; contains greenish 

 and white specks of extraneous matter. 



Specific gravitij. — 4-697 at a temperature of 70° Fahr. 

 Composition. — Metallic iron, - 65-99 per cent. 

 Insoluble matter, - 7-2 do. 



Lime and alumina, slight traces. 



Sterling Mine, near the Mount Pleasant Mine. 



Description. — Ore, magnetic, massive and granular; grains 

 distinct, interspersed W'ith specks of a whitish decomposed mineral, 

 amounting to almost one-half the whole bulk. 



Specific gravity. — 4*691 at a temperature of 66° Fahr. 

 Composition. — Metallic iron, - 66-4 per cent. 

 Insoluble matter, - 4-4 do. 



Alumina, rather more than a trace. 



Succasunny Mine. 



Description. — Ore, magnetic, highly crystalline; grains large 

 and distinct. 



Composition. — Peroxide of iron, - 70-00 per cent. 

 Protoxide of iron, - 28-25 do. 

 Oxide of titanium, - a trace. 

 Oxide of manganese, - a trace. 



Oxford Furnace Ore, ScotVs Mountain, Warren county. 

 Description. — Ore, magnetic, and somewhat granular and fri- 



