REPORT OF THE CHIEF ASTRONOMER 



SESSIONAL PAPER No. 25a 



GUOUP XII. 



391 



Si0 2 



Ti0 2 .. 



AI2O3. 



Fe 2 3 



FeO . 



MnO. 



MgO 



CaO.. 



Na 2 0. 



K 2 0.. 



H 2 0.. 



P 2 5 . 



No. of Analyses. 



Plutonics. 



"78 



Alaskite 

 (Osann). 



T9 



Diorite of 



Electric 



Peak (Rosen- 



bnsch). 



10 



21 



60 



45 



53 



89 



02 



32 



96 



88 1 



21 



80 2 



13 



80 



Malignite 



(Osann and 



Daly). 



Calculated as Water-free. 



Si0 2 



Ti0 2 . 



Al 2 O a 



Fe 2 3 



FeO. 



MnO 



MgO. 



CaO. 



Na 2 



K 2 0. 



P2O5. 





76-87 



62 



71 



50 





•07 





60 







1310 



16 



58 



14 



J 



105 | 

 01 



2 

 2 



55 

 92 

 02 



4 



2 





06 



3 



35 



4 





•45 



5 



00 



10 





355 







91 * 



5 





4 83 



2 



23 



5- 





•01 





13 



1- 



)'95 

 ■35 

 1-93 

 t 23 



!-78 

 11 

 1-28 

 C56 

 S-33 

 i-27 

 .•21 



Each sum = 100 00. x Includes "07% Li 2 0. - Includes "05% CI and '05% SO3. 



25a — vol. iii — 45 



