REPORT OF THE CHIEF ASTRONOMER 



SESSIONAL PAPER No. 25a 



GROUP VI. 



685 





Plutonics. 







Effusives. 









38 



39 



40 



41 



42 



43 



44 



45 









'-'.S 





















rnQ fl- 



CO 



"3 af 













a 





ing 

 vine 

 yres 

 3san 



by 



ing 

 hylit 





a 



a 



03 









c 

 a 

 ea 



CO 







Si: 



o-* 



a 



s 



CO 



O 

 O 



X> 

 03 



asalt, incluc 

 ilts, 17 Oli 

 s, 11 Melaph 

 9 Dolerites ( 



, as named 

 lors (includ 

 niesite, Tac 

 (Osann). 



s 



03 



CO 







O 



ca 



CO 



oj 

 Si 

 o3 



A 



s 

 p 



o3 

 O 



CD 



u 



>i 



43 



a 



o3 



CO 









5£ 



11 B 

 Bass 

 base 

 and 



asalt 

 Aut 

 Ana 

 &c.) 



o3 

 c3 



> 



ft 



*3 



"3 





«! 



< 



< 



CQ 



Q 



O 



§ 



O 



No. of 



Analyses. 



















7 



41 



198 



161 



20 



17 



11 



9 



Si0 2 



50-16 



48-24 



49 06 



48 78 



50 12 



50 10 



50 60 



49 50 



Ti0 2 



164 





97 



1 



36 



1 



39 



141 



1 



25 





68 



1 



42 



AI2O3. . . , . 



18 51 



17 



88 



15 



70 



15 



85 



15 68 



14 



43 



17 



40 



14 



37 



Fe 2 3 .... 



1-88 



3 



16 



5 



38 



5 



37 



455 



5 



06 



4 



57 



6 



55 



FeO..'... 



9 29 



5 



95 



6 



37 



6 



34 



673 



6 



31 



6 



29 



5 



84 



MnO 



14 





13 





31 





29 



•23 





25 





46 





17 



MgO. ... 



5-97 



7 



51 



6 



17 



6 



03 



5 85 



7 



32 



4 



89 



7 



75 



CaO 



7 'SO 



10 



99 



8 



95 



8 



91 



8-80 



9 



53 



8 



09 



9 



96 



Na 2 



2"72 



2 



55 



3 



11 



3 



18 



2 95 



2 



75 



3 



23 



2 



50 



K 2 



•80 





89 



1 



52 



1 



63 



1 38 





73 



1 



76 





84 



H 2 



"76 



1 



45 



1 



62 



1 



76 



193 



2 



00 



1 



83 





66 



P 2 6 



•23 



•28 



•45 



•47 



•37 



•27 



•20 



•44 



Calculated as Watek-free. 



Si0 2 .. . 

 Ti0 2 ... 

 A1 2 3 . . 

 Fe 2 3 . . 

 FeO... 

 MnO . . 

 MgO. . 

 CaO.. . 

 Na 2 0.. 

 K 2 . . . 

 P 2 5 .. . 



50 



54 



43 



95 



49 



87 



49 



65 



51 



11 



51 



12 



51 



54 



49- 



1 



65 





98 



1 



38 



1 



41 



1 



44 



1 



27 





69 



1- 



18 



65 



18 



15 



15 



96 



16 



13 



15 



99 



14 



73 



17 



73 



14- 



1 



90 



3 



21 



5 



47 



5 



47 



4 



64 



5 



16 



4 



66 



6" 



9 



36 

 14 



6 



04 

 13 



6 



47 

 32 



6 



45 

 30 



6 



86 

 23 



6 



44 

 25 



6 



41 

 47 



5- 



6 



02 



7 



62 



6 



27 



6 



14 



5 



96 



7 



47 



4 



99 



T 



7 



96 



11 



15 



9 



09 



9 



07 



8 



97 



9 



73 



8 



24 



io- 



2 



74 



2 



59 



3 



16 



3 



24 



3 



01 



2 



81 



3 



29 



2- 





81 





90 



1 



55 



1 



66 



1 



41 





74 



1 



78 



• 





23 





28 





46 





48 





38 





28 





20 





Each sum = 100.00. 



