OF ARKANSAS. 



173 



Alumina 

 Lime • • • 

 Water • • 



3.590 

 trace 

 8.259 



95.155 



68.543 parts of sesquioxidc of iron contain 47.98 parts of metallic iron. 



-o- 



The preceding six ores are all very good iron ores, and valuable for 

 manufacturing purposes if procurable in sufficient quantity. With regard 

 to Nos. 26 and 30, it is to be remarked that the yield of metal will be 

 increased by an intermixture with the manganese, reducible from the ses- 

 quioxidc of manganese, which forms with the iron an alloy, valued very 

 highly by some iron-men as being particularly adapted for the manufac- 

 ture of a superior quality of steel. 



The following table shows, at a glance, the richness and comparative 

 value of the ores: 



100 parts of ore from 



Old Jackson, No. 26 



Dr. Payne's land, No. 27- 

 Alf. Bevens & Co., No. 28. 

 same No. 29 



Randolph county, No. 30- 

 Fulton county, No. 31 • • • 



r~ 



Contain 



Iron. 



-> 



40.79 

 48.33 

 55.76 



59.74 

 46.76 



47.98 



Manganese. 



9.64 

 1.04 



trace 



trace 



7.99 



0.85 



Total. 



50.43 

 49.37 

 55.76 

 59.74 

 54.75 

 48.83 



The absence of sulphur and phosphoric acid in these ores is a further 

 recommendation for smelting purposes, as the presence of these impuri- 

 ties is apt to injure the quality of the iron. 



