i6 



NEW YORK STATE MUSEUM 



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

 cation are as follows : 



Si 2 .. 

 AI 2 3 . 

 Fc O, 

 Fe'O.'; 

 Mg O. 

 CaO. 

 Na 2 O 

 K 2 O.. 

 H 2 O.. 

 Ti 2 . 

 P 2 5 . 

 Mn O. 



S 



CI.... 



F 



Ba O. 

 Zr O.. 



Per 



cent 



66.35 

 14.09 

 1. 81 

 4-49 

 1. OS 

 3 16 

 3-32 

 4.08 



• 35 

 I. 00 



.40 

 .17 

 .04 



.02 



• 03 



• 03 



trace 



Mol. 



106 

 138 

 on 

 063 

 026 

 056 

 053 

 044 



013 

 003 

 003 



Ilm. 



13 



13 



Apat. ! Orth. j Alb. An. 



254 j 3i8 

 44 i 53 



44 



53 



82 



41 



41 



Mag. 



11 

 11 



Diop. Hyp 



63 



36 



24 



Qtz. 



37; 



Qtz.. 

 Orth. 



Alb.. 



An. . 

 Diop. 



Hyp. 



Mag. 



Ilm.. 



Apat. 



22.62 ' 

 24.46 



27.77 



Class, 



Sal. 



86.25 



> Sal.= 86.25 



Order, 



Fern. 



Q 



1 1 . 40 j 

 i.i7 N 



14.08 

 22.62 



6363 



< 7/i> 5/3"== II. Dosalane 



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



7-45 



2.55 \ Fem.= 14.08 



1.98 



Rang, 



K 2 + Na 2 97 



•93 J 



CaO 

 K 2 



56 



< 7/i > 5/3 = 2 i Dacase 



vSubrang, 



44 



Na 2 53 



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



100.33 

 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 measured sections 





Microperthite 

 Orthoclase . . . 

 Plagioclase . . . 

 Hornblende. . 



Quartz 



Magnetite. . . . 



Garnet 



Zircon 



Apatite 



Zoisite 



Total 

 diameters 



1687 

 1824 



1243 

 I248 



1935 

 240 



330 



9 

 17 

 40 



8573 



Relative 

 volumes 



19.68 

 21 .28 

 14.49 



H-54 



22.57 



2.80 



3-84 

 .10 

 .20 

 •47 



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 



by weight 



Percentage 

 weights 



4386 

 4742 

 3269 



3994 



5128 



1260 



1221 



41 



54 



130 



24225 



18 

 19 

 13 

 16 

 21 

 5 

 5 



10 



57 

 48 



48 



17 

 20 

 04 



17 

 22 



54 



99-97 



