FROM 



LAND 



207 



100-0 



A chemical analysis made by A, 



as follows : 



Si0 2 



Ti0 2 



A1 2 3 



Fe 2 3 



FeO 



MnO 



MgO 



CaO 



Na 2 



K 2 



H 2 + 



H 2 0- 



P 2 5 



C0 2 



B. AValkom, B.Sc, and G. J. Burrows, B.Sc, resulted 



Total 



7601 

 0-31 



13-29 

 0-52 

 1-75 

 0-01 

 0-60 

 0-72 

 3-33 

 2-63 

 0-25 

 0-27 

 0-37 

 006 



10012 



A comparison of the norm and mode is of interest. The latter is the percentage 

 weight composition calculated from the volume composition already noted. 



100-0 



These figures correspond with those of the chemical composition of an extremely acid 

 granite. 



Chemico-mineralogical Classification , 

 (Alsbachose.) 



Class 1, Order 3, Bang 2, Subrang 



This is distinctly more acid than the massive granite outcrops of South Victoria 

 Land. Concentration of the quartz grains and the elimination of soluble alkali and 

 iron would be expected to attend any sedimentation process to a more or less marked 

 extent. 



