GEOLOGY OF THE BROADALBIN QUADRANGLE 



19 



Si 2 71 



AI2 O a 13 



Fe 3 Os 1 



Fe 1 



Mg O 



Ca 1 



Na 2 O 2 



K 2 6 



H 2 O 



Ti 2 



P 2 5 



Mn O... 



Ba O 



S 



CI 



F 



Zr O 



45 

 83 

 10 



9i 



56 

 44 

 62 

 09 

 32 

 42 



03 

 17 

 02 

 02 



03 

 01 

 02 



100. 04 



The norm and place of this rock in the quantitative chemical 

 classification are calculated as follows : 



Per 

 cent 



Mol. 



Urn. 



Apat. ! Orth. 



Alb. 



An. 



Cor. 



Mag. 



Hyp. 



Qtz. 



Si 2 . 

 Al 2 0-, 

 Fe 2 :) 

 Fe O.. 

 MgO. 

 CaO. 

 Na 2 O, 

 K 2 O.. 

 H 2 O.. 

 Tif0 2 . 

 P 2 5 . 

 Mn O. 



S 



CI.... 



F 



BaO. 

 Zr O.. 



71-45 



13-83 



1. 10 



1. 91 



• 56 



1.44 

 2.62 

 6.09 



• 32 

 .42 

 .03 

 .17 

 .02 

 .03 

 .01 

 .02 

 .02 



1 . 191 

 135 

 007 

 026 

 014 

 026 

 042 

 065 



005 



0002 



003 



390 

 65 



65 



252 



42 



42 



50 

 25 



25 



3i 



14 

 14 



468 



Qtz.. 28.08' 



Orth. 36. 14 



Alb. . 22.01 \ Sal. 



An... 6.95 

 Cor.. .31 



Hyp. 



364I 



Mag. 



1 .62 



Urn.. 



.76 



Apat. 



.00 



Sal. 93.49 



Class, = > 7/1 =1, Persalane 



Fem. 6.08 



9349 



Order, 



Q 



28.08 



Rang, 



F 65 10 

 K 2 + Na 2 



< 3/5 > 1/7 = 4, Brittanare 

 107 



Fem.= 6.08 



< 7/i> 5/3 = 2, Toscan- 

 26 ase 



65 



Subrang, = — < 5/3 > 3/5 = 3. Toscanose 



Na-O 42 



99 • 57 



