534 W. A. NELSON APPALACHIAN BAUXITE DEPOSITS 



Complete Analysis 



Per cent 



SiO, 44.76 



AI2O3 42.38 



Fe^Oa 18 



TiO, 1.04 



CaO 18 



MgO trace 



ICO and Na^O 22 



Anajlysis of Lignite 



Per cent 



Moisture 7 . 30 



Volatile combustible matter 54 . 88 



Fixed carbon 15 . 48 



Ash 22.34 



Sulphur 1.60 



Analyses of lignite, as given by Moore,^ show that the above analysis 

 makes this material fall into the limits of the lowest grade lignite. The 

 analysis of the ash of this lignite is as follows : 



ANAI.YSIS OF Lignite Ash 



Per cent 



SiOa : 47. 82 



ALO3 48.80 



FeoOs trace 



TiO, 2.40 



CaO 12 



MgO 64 



99.78 



This ash burns to a white powder. The volatile matter in this sample 

 (B-385) was determined according to the method for the proximate 

 analysis of coal. The result is probably a little high, on account of 

 mechanical loss. 



The analysis of the siliceous material is as follows : 



Analyses of siliceous Material 



National Method 



Per cent 



Insoluble 89 .95 



ALO3 6.18 



Fe.Oa 86 



TiO^ 70 



8 E. S. Moore : Coal. .John Wiley and Sons, 1922, p. 84. 



