554 



OGILVIE 



of the following table to which are added all rocks from the same 

 subrang that have previously been anal }r zed from the immediate 

 vicinity. 



Table XIII. 



Analyses of Auvergnose from the Coast of Maine. 





I. 



II. 



III. 



IV. 



V. 



VI. 



Si0 2 



49.00% 



53-oi% 



46.29% 



45-66% 



44-79% 



47.20% 



A1 2 3 



15-46 



15-54 



17.16 



16.26 



15.18 



18.64 



Fe 2 3 



2.58 



1.85 



2-57 



2.97 



4-13 



1.96 



FeO 



7.98 



6.09 



9.87 



8.51 



8.21 



6.82 



MgO 



6.46 



7.70 



7-79 



10.21 



7-93 



8.28 



CaO 



n.83 



10.60 



12.04 



12.25 



14.10 



11.52 



Na 2 



2 -75 



2-37 



2.21 



i-34 



2.1S 



2.91 



K 2 



• 44 



.62 



.16 



•3i 



•3° 



.28 



H 2 + 



.09 



•73 











H 2 - 



.07 



•47 











co 2 



none 



none 











Ign 







•5i 



-92 



*-33 



1.44 



Ti0 2 



3-72 



1.70 



1. 21 



i-39 



1.84 



.84 



P 2 5 



•3° 



trace 



n.d. 



n.d. 



n.d. 



n.d. 



Total 



100.68 



100.68 



99.81 



99.82 



99-99 



99.89 



Norms of Auvergnose. 



Qu 



I. 



II. 



III. 



IV. 



V. 



VI. 



Or 



.66 



4.20 











Ab - 



2.22 



3-34 



1.1 



i-7 



i-7 



i-7 



An 



23.06 



20.44 



18.3 



11. 



12.6 



21.5 



Ne 



28.63 



29-75 



36.4 



37-5 



30.6 



36.7 



Di 











3-i 



i-7 



Hv 



22.77 



18.40 



19-5 



19-3 



31.S 



16.6 



01 



11.50 



18.92 



2.4 



11. 2 







Mt 







15.8 



11. 2 



9-5 



15-9 



11 



3-7i 



2-55 



3-7 



4-4 



5-8 



3-° 



Ap 



6.99 



.67 



3-°4 



2.2 



2.6 



3-6 



i-5 



I. Hornblende schist from Bayville. (See p. 543). 

 II. Diabase dike from east side Linekin's Bay. (See p. 550). 

 III. Beerbachite. Lord, A. G., XXVI, p. 346. Monhegan Island. (Dike.) 

 IV. Malchite. Lord, A. G., XXVI, p. 346. Monhegan, Island. (Dike.) 

 V. Hornblende-gabbro. Lord, A. G., XXVI, p. 340. Monhegan 

 Island. 

 VI. Gabbro-diorite. Lord, A. G., XXVI, p. 340. Monhegan Island. 



The general similarity among all six of these types is evident. 



