690 



DEPARTMENT OF THE INTERIOR 



GROUP XI. 



2 GEORGE V., A. 1912 





Plutonics. 



Effusives. 



Plutonic . 



Effusives. 





71 



72 



73 



74 



75 



76 



77 







a 



43 • 



'O 







.« 





-jj 



o 



« £ 



a 



c3 





d 



03 





o 



s- 



HI C 







o 







m 



-H 



cSfd 



C-t. 



^ 



tf 



cS 





s 



03^ 



»T3 

 C 



c3_c 

 #1 



c 



0> 



M 





<D 



Iq 







O 



.§-*■ 











OS o 







5) o 



<U cS 





be 





„ mi 



o o 



'■% 



-a s 



«^2 



CO 



4) ■ — • 







§ 



1-3 1-3 



M 



!zi 



£ 



No. of Analyses. 



1 



2 



7 



7 



5 



9 



26 



Si0 2 



51'70 



44-27 



46-47 47-72 



43 51 



41 17 



39-87 



Ti0 2 



14 



23 



50 



1 

 10 



37 

 73 



1 



15 



33 -52 

 97 18-19 



1 

 19 



07 

 54 



135 150 



A1 2 3 



16-83 



13 58 



Fe 2 3 



5 



07 



3 



63 



5 



97 1 4-74 



3 



77 



7 61 



671 



FeO 



3 



58 



5 



87 



4 



27 3-90 



3 



88 



664 



643 



MnO 



4 



7 

 2 



7 



01 



55 



40 1 



93 



60 



13 



11 



1 



4 



06 



05 



46 2 



07 



43 



5 



10 



1 



4 



01 06 



87 345 

 54 7-27 

 69 ! 4-51 

 83 1 7'66 



2 



9 



10 



2 



16 

 94 



89 

 58 

 26 



■16 



372 



10-12 



6-45 



2-49 



•21 



MgO 



10-46 



CaO 



12 36 



Na 2 



385 



K 2 



1-87 



H 2 



2 



25 



3 



23 



2 



32 | 151 





86 



242 



2 -22 s 



P 2 6 



•18 



•83 



■73 | '47 



1-54 



104 



•94 



Calculated as Water-free. 



Si0 2 .. 



Ti0 2 . 



AI2O3 



Fe 2 3 



FeO. 



MnO. 



MgO. 



CaO . 



Na 2 



K 2 0.. 



P2O5.. 



52 



89 





24 



14 



83 



5 



18 



3 



66 





01 



4 



65 



7 



57 4 



3 



00 



7 



79 





18 



45 ' 75 

 141 



11 09 



3 75 



6 07 



■06 



13 49 



11 "85 5 



110 



457 



•86 



47-58 

 136 



10 35 

 6-11 

 437 



•01 



601 



10-79 



173 



494 



'75 



■45 

 ■53 



•47 

 •81 

 •96 

 •06 

 ■50 

 •38 

 •58 

 •78 

 •48 



42 



19 



40- 



1 



38 



I- 



17 



25 



IB- 



7 



79 



S' 



6 



81 

 17 



6- 



3 



81 



10' 



Ki 



37 



12" 



6 



61 



3- 



2 



55 



1 



1 



07 



■ 



Each sum = 100 00. 1 Includes 30% BaO and '07% SrO. 



2 Includes '48% BaO and "18% SrO. 3 Includes '29% C0 2 - 



4 Includes '31% BaO and '07% SrO. 5 Includes '50% BaO and '19% SrO. 



