COMPARISON OP FOYAITIC ROCK ANALYSES 



Analyses of Foyaitic Rocks 



413 



IX. 



X. 



XI. 



XII. 



XTII. 



XIV. 



XV. 



XVI. 



XVII. 



XVIII. 



XIX. 



60.42 



53.96 



49.67 



41.80 



53.74 



51.62 



49.46 



48.90 



45.18 



47.8 



51.88 



19.23 



21.78 



17.99 



14.56 



14.02 



15.63 



23.53 



7.85 



23.31 



20.1 



14.13 



0.63 

 3.19 



0.62 

 2.55 



[ 13.06 



f 6.09 

 1 6.41 



10.63 

 1.71 



6.06 



4.98 



3.04 

 1.02 



11.46 

 13.32 



[an 



f 6.7 



1 0.8 



6.45 

 0.94 



0.67 



0.54 



3.06 



4.66 



Trace. 



Trace. 



0.03 



0.38 



1.45 



1.1 



3.44 



1.73 



1.93 



6.63 



14.87 



1.18 



3.45 



0.80 



1.95 



4.62 



5.4 



10.81 



6.99 



8.61 



6.21 



4.25 



9.02 



10.09 



14.71 



7.40 



11.17 



5.5 



6.72 



6.88 



7.02 



2.62 



1.94 



4.77 



4.19 



4.34 



3.23 



5.94 



7.1 



4.57 



1 74 



2.29 

 1.03 



0.86. 



1.18 



4.14 



3.40 



2.12 



1.38 



1.80 



1.14 



2.4 

 0.7 



0.18 

 0.33 





2.13 

 0.36 



2.14 

 0.33 



0.54 



1.96 

 1.11 







Trace. 



0.15 

 Trace. 









0.8 









0.52 



0.96 





Trace. 









2.25 



0.03 



























101.48 



100.48* 



100.10 



100.82 



100.96 



100.61 



101.27 



99.39 



98.92 



99. 3f 



100.41 



XI. Essexite, Monchique, Portugal; scholar of Jannasch, analyst. Koschlau: 

 Op. cit.,p. 239. 



XII. Basic segregation in Foyaite, Monchique ; Singhof, analyst. Koschlau : 

 Op. cit, p. 237. 



XIII. Lujavrite, Kangerdluarsuk, Greenland; Ussing, analyst. Rosenbusch: 

 Elemente d. Gesteinslehre, 1898, p. 126. 



XIV. Lujavrite (trachytoid), Kangerdluarsuk. Rosenbusch: Op. cit., p. 126. 



XV. Sodalite-syenite, Kangerdluarsuk ; Ussing, analyst. Rosenbusch : Op. cit., 

 p. 126. 



XVI. Schlieren in Lujavrite, Kangerdluarsuk ; Detlefsen, analyst. Rosenbusch : 

 Op. cit., p. 133. 



XVII. Nepheline-porphyry (Sussexite) , Beemerville, New Jersey; Kemp, analyst. 

 Kemp: Transactions of the New York Academy of Sciences, vol. xi, 1892, p. 60. 



XVIII. Borolanite, lake Borolan, Scotland ; Player, analyst. Home and Teall : 

 Transactions of the Royal Society of Edinburgh, vol. xxxviii, 1893, p. 163. 



XIX. Garnet- pyroxene-malignite, Poobah lake, Ontario, Canada ; Blasdale, ana- 

 lyst. Lawson : Bulletin of the Department of Geology, University of California, 

 vol. i, p. 356. 



* Traces of SrO, Li 2 0, and S. f Including 0,8 BaO and 0,4 SOg. 



LIX— Bulj,. Geoi.. Sou. Am., Vol, 11, 181)0 



