GEOLOGY OF THE NORTH CREEK QUADRANGLE 



41 



Table 10 

 Chemical composition and norm of diabase 





Per cent 



^ 



11m 



Apat 



1 



Xi 









 :tr. , c 



< \ < 







 '6 



u 



(U 



0. 



X 



^3 







SiO 



^0 k:7 



.843 

 ■133 

 .020 

 . 140 

 .124 

 .137 

 .047 

 .020 







120 

 20 



276 JT-l/l 





126 



153 



34 



AUO1 



.13 



3 

 10 



4 

 7 

 2 



I 



2 



58 

 26 

 OQ 



98 



67 

 92 



89 

 16 



94 

 68 

 28 

 09 

 09 

 36 

 09 

 10 

 ni 



j 







46 



67 



Fe.Oi 



i 







20 

 20 









FeO 



33 













26 



37 

 61 



61 



87 





MgO 



CaO 

















7 



' 2 









67 







Na2d 



.... 

 I 



20 



46 







K2O 



















H2O+. 



















H2O— . 

























TiOo 



■033 

 .002 

 .002 

 .005 



• 005 

 .001 

 .001 



33 





















P20i 



2 



















CI 





2 















F 



. .. . 



I 



4 















IVInO 













5 





BaO 











........ 





I 

 I 





SrO 



















S. . . 











1 

























i 











Tot il. . . 



99 



78 





Qtz 2 . 04 



Orth 1 1 . 12 



Alb 24. 10 



Anor 18.63 



NaCl 12 J 



Mag 464 1 



Tim 502 j 



Apat 67 



Fluor 16 



Diop 14-44 



Hyper i7-4i 



HaO+vS _ I^IJJ 



Total 99 48 



vSal. 56.01 5 3 

 Class, = <— > — = III, Salfemane 



vSal.= 56.01 



Order, 



Fern. 42.34 3 5 

 QL 2.26 I 



<— = 5, Gallare 



F 5385 7 

 KoOi + Na.Oi 67 5 3 



Rang. = — <->-=^3. Camptonase 



CaO 67 3 5 



Fern. = 42. 34 



K2O1 20 3 I 



Subrang, = — ■<->- = 4, Camptonose 



NiuO' 47 5. 7 



Table 1 t 

 Mode of diabase 



Plagioclaso 

 Biotite. . . . 

 Ilmenitc . . 

 Augite. . . . 

 Pyrite. . . . 

 Quartz . . . . 

 Apatite . . . 



Units 

 measured 



2 027 



975 



168 



I 090 



30 



2() 



8 

 4 324 



Rcl. vols. 



S. G. 



46.88 



22 . 55 



3.88 



25,21 



.69 



.60 



.18 



99 99 



.66 

 .20 



17 



30 



.00 



•65 

 .20 



Units 

 by weight 



5 392 

 3 120 



868 



3 597 

 150 



69 

 26 



13 222 



Percentage 

 weights 



23 59 



6 . 56 



27.20 



1 13 

 •52 

 •19 



99 97 



