486 H. p. GUSHING ASYMMETRIC DIFFERENTIATION IN SYENITE 



Chemical Analyses and Discussion 





1 



2 



3 



4 



5 



6 



7 



8 



SiO, 



44.77 



12.46 



4 63 



12.99 



5.34 



10.2 



2.47 



.95 



.6 



.37 



5.26 



.28 



47.42 

 17.34 

 4.91 

 10.22 

 5.21 

 8.09 

 3.48 

 1.89 

 1.13 



51.62 

 24.45 

 1.65 

 5.3 

 1.21 

 9.97 

 3.49 

 1.27 

 .72 



54.47 



26.45 



1.3 



.66 



.69 



10.8 



4.37 



.92 



.53 



54.62 



26.5 



.75 



.56 



.74 



9.88 



4.5- 



1.23 



.91 



54.38 

 20.53 

 2.78 

 5.5 

 1.99 

 5.39 

 5.2 

 3.4 

 .5 



54.10 

 17.45 

 4.52 

 6.47 

 2.33 

 6.17 

 3.81 

 3.06 

 .57 



57 00 



ALO, 



16 01 



FeoO, .. 



} 10.3 

 1 62 



FeO 



MgO 



CaO 



6 ''O 



Na^O 



4 35 



K,0 



3 53 



H.,0 



.15 



COj 





TiO„ 



3.6 

 .06 

 .21 









.09 

 .15 

 .03 

 .03 



.19 



.88 





P„0, 



.01 









CI 









F 











.05 

 .14 

 .35 

 .10 





S 



.26 



.17 



Trace 













MnO 



.06 

 .04 



.1 







.01 

 .16 





BaO 



















Total 



100.75 



100.01 



99.79 



100.19 



99.7 



100.03 



100.19 



99 16 









9 



10 



11 



12 



13 



14 



15 



16 



SiO., 



59.7 



19.52 



1.89 



4.92 



.78 



3.36 



5.. 31 



4.14 



.52 



61.01 



15.36 



2.98 



7.77 



.78 



4.05 



3.68 



3.9 



.49 



63.45 



■ 18.38 



1.09 



2.89 



.35 



3.06 



5.06 



5 15 



.3 



.07 



65.65 

 16.84 



}4.01 



.13 



2.47 



5.27 



5.04 



.3 



66.72 



16.15 



j 1.23 



I 2.19 



.73 



2.3 



4.36 



5.66 



.77 



68.5 



14 69 



1.34 



3.25 



.26 



2.2 



3.5 



5.9 



.4 



68.18 

 16.15 

 1.26 

 1.00 

 .64 

 2 48 

 4.22 

 5.59- 



69 24 



Al.,0, 



14.85 



FeoO, 



1 2.62 



FeO : 



MgO 



.97 



CaO 



2.1 



NajO 



4.3 



Ka^^O 



4.33 



HjO 



.07 



TiO.^ 





P.O. 











.03 



1 

 0.02 





CI '...... 















F 

















s 















0.03 





MnO 



.09 



.08 



Trace 

 .13 





.07 



.1 



.05 



.45 



BaO 



















Total 



100.23 



100.1 



99.73 



99.71 



100.18 



100.22 



100 02 



99.56 







1. Norlte, wall rock of titaniferous magnetite deposit, Lincoln pond, Eliza- 

 bethtown, Essex county, New York. Description by J. F. Kemp, analysis by 

 W. F. Hillebrand, U. S. Geological Survey. 19th Ann. Rept., 1899, part 3, p. 

 407. 



2. Gabbro (hyperite), dike near Nieholville, Hopkinton, Saint Lawrence 

 county, New York. Brief mention by H. P. Gushing. 16th Ann. Rept. New 

 York State Geologist, 1896, p. 22. E. W. Morley, analyst. 



3. Anorthosite gabbro, Cirnes's quarry, Altona, Clinton county. New York. 

 Description by H. P. Gushing, analysis by E. W. Morley. 19th Ann. Rept. New 

 York State Geologist, p. r58. 



