OF ARKANSAS. 171 



Carbonate of lime ■> trace 



Water 12.080 



90.934 

 58.278 parts of peroxide of iron contains 40.79 parts of metallic iron. 



• No. 27. Limonite, from Dr. Payne's land, Pocahontas, Randolph county. 



Massive; reddish-brown, with yellow spots on surface; rather earthy in 



appearance; evolves argillaceous odor when breathed upon, and adheres 



to the tongue. Powder dark brownish-red, becoming rather more red on 



ignition. 



Composition of air-dried ore: 



Clay and sand 21.100 



Sesquioxide of iron • G9.03G 



Sesquioxide of manganese 1 .488 



Alumina trace 



Carbonate of lime trace 



Water 7.590 



99.214 

 69.03G parts of sesquioxide of iron contain 48.33 parts of metallic iron. 



No. 28. Limonite, from Alfred Bevens & Co., Lawrence county. 



Massive; of earthy appearance and yellow color on and near the sur- 

 face, in the interior brownish-yellow and more compact; evolves strong 

 argillaceous odor when breathed upon; adheres to the tongue. Powder 

 dirty brownish-yellow. 



Composition of air-dried ore: 



Silica 3.099 



Sesquioxide of iron 79.GG3 



Sesquioxide of manganese trace 



Alumina 5.203 



Carbonate of lime 0.55G 



Water 11 .397 



99.918 

 79.GG3 parts of sesquioxide of iron contain 55.76 parts of metallic iron. 



No. 29. Limonite, so-called "pot and kidney ore," from Alfred Bevens 

 & Co., Lawrence county. 



Massive; compact, stalactitic and reniform; surface smooth, of reddish- 



