

10 N. L. Bowen — Genetic Features of 





Table II. 











I 



II 



Norm of II. 



Si0 2 



31.10 



83.31 



Q 



61.08 



A1 2 3 



10.08 



4.46 



Or 



23.91 



Fe o 3 



3.64 



1.10 



Ab 



0.52 



Feb 



3.35 



0.45 



Ac 



3.23 



MgO 



12.25 



0.28 



Ns 



1.83 



CaO 



22.77 



2.87 



Di 



1.51 



Na o 



1.95 



1.42 



Wo 



5.80 



K 2 6 



3.56 



4.02 



11 



1.06 



H 2 + 



0.76 



1.02 







H 9 — 



0.46 



0.18 







co 2 



4.94 



n.d. 







Ti0 2 



2.73 



0.64 





Symbol 



p 2 o 5 



2.01 



n.d. 



(I) 



MnO 



0.09 



ft. tr. 







99.69 99.75 



I. Melilite-biotite rock, Isle Cadieux, Quebec. 

 H. S. Washington analyst. 

 II. Aplitic inclusion in monticellite alnoite, Isle Cadieux, 

 Quebec. H. S. Washington analyst. 



Distribution of Similar Bock Types. 



About a mile northwestward from the outcrop to 

 which particular attention is here given, there is a cut on 

 the railway track and the material taken from this cut is 

 almost entirely of rock types similar to those in the 

 outcrop studied, Here are found various facies of 

 monticellite alnoite and biotite-melilite rock exactly like 

 the types already described. From the present condition 

 of the cut it is not possible to determine definitely whether 

 this material had been in place, though, its uniform 

 nature strongly suggests that such was the case. Even 

 if it was of the nature of drift it could not have been 

 derived from the outcrop described, for it has not the 

 appropriate position relative to the direction of motion 

 of the glacier. The existence of this material proves 

 definitely, then, that the types described are not confined 

 to the outcrop studied and may be rather widespread in 

 this area. 



