i6 



NEW YORK STATE MUSEUM 



The norm and position of this rock in the quantitative classifi- 

 cation are as follows : 



Per 



cent 



Mol. 



Ilm. 



Apat. Orth. I Alb. 



An. 



Mag. 



Diop. 



Hyp. 



Qtz. 



Si O2.. 



A]2 O3, 



Fe2 Os 

 Fe O., 

 Mg O. 

 CaO. 

 Na2 O 

 K, O.. 

 H2 O.. 

 Ti O2. 

 P2O5. 

 Mn O. 



S 



CI.... 



F 



BaO. 

 Zr O.. 



66.35 

 14.09 

 1. 81 

 4-49 

 I. OS 

 3.16 

 3-32 

 4.08 

 .35 

 I .00 



.40 

 .17 

 .04 



.02 

 .03 

 .03 



trace 



106 

 138 

 on 

 063 

 026 

 056 

 053 

 044 



013 



003 

 003 



254 



318 

 53 



63 



3 I 36 



2 ' 24 



5 ' 



Qtz... 



22 



62 



Orth.. 



24 



46 



Alb... 



27 



77 



An. . . 



II 



40. 



Diop. . 



I 



17' 



Hyp.. 



7 



45 



Mag. . 



2 



55 



Ilm... 



I 



98 



Apat. . 





93; 





100 



■33 



Sal. 



Class, 



86.25 



Sal. 



•25 



Fern. 

 



Order, 



14.08 

 22.62 

 63.63 



< 7/1 > 5/3 == II, Dosalane 



< 3/5 > 1/7 = 4. Austrare 



Rang, 



K2O + Na20 97 



55 \ Fem.= 14.08 



Subrang, 



CaO 



K2O 



56 



< 7/1 > 5/3 = 2, Dacase 



44 



Na20 53 



< 5/3 > 3/5 = 3. Adamellose 



The Sal-Fern ratio brings the rock pretty close to the Persalane 

 class, while the alkalicalcic ratio closely approaches that of Rang 3 

 (Tonalase) and the Subrang approaches Dacose. 



Mode calculated from meastired sections 



Microperthite 

 Orthoclase . . . 

 Plagioclase . . . 

 Hornblende. . 



Quartz 



Magnetite 



Garnet 



Zircon 



Apatite ...... 



Zoisite 



Total 

 diameters 



1687 

 1824 



1243 

 1248 



1935 

 240 

 330 



9 



17 

 40 



8573 



Relative 

 volumes 



99-97 



Sp. gr. 



2.6 

 2.6 



2.63 



3-2 



2.65 



5-25 



3-7 



4-5 



3-2 



3.26 



Units Percentage 



by weight 1 weights 



4386 

 4742 

 3269 



3994 



5128 



1260 



1221 



41 



54 



130 



24225 



18.10 



19-57 



13-48 



16.48 



21 . 17 



5.20 



5-04 



-17 



.22 



-54 

 99.97 



