REPORT OF THE CHIEF ASTRONOMER 

 SESSIONAL PAPER No. 25a 



799 





Rocky Mi. S 



YSTEM. 



Purcell Mountain System. 



NELSOjN 



Range. 









6 



» °* 











-i 





m 





C 60 



.S S 







H 



03 



03 



M 











u 









S3 



c8 



T3 









c ° 

 "5 £ 



03 

 CO 



of . 

 5 ° 



3 



60® 



ft . 



£.2 



^ a 

 ^ 03 



03 

 O 

 & 03 



03 



> 



c 



— 



So 



S O)' 



33 



60 ts 



cS S 



u 







IE ^^ 



3 cS 



of S 



5 a 



IK t* 



o) c 



03 

 * g 



Si 



la 



03 3 



p4 



eldspar 

 chonolit 





33 ^ 



c 



■30 



■-3 a: 



£51 



£0 



03 3 



ilcareo 

 era ph 

 tion. 



§0 





if 03 



S3 -=! 

 O « 



5 u 



£ S 

 -« 



a « 





CO 



CO 







O 



G? 



0? 



1135 



D 

 1134 



Q 

 886 



ti 





1221* 



1301 



1250 



1179 



1125 





Si0 2 



36-80 



2461 



68 37 



5165 



82-10 



76 90 



74 23 



5-84 



54 60 



Ti0 2 











•40 



886 

 •49 



■35 



11-25 

 ■69 



•58 

 13 23 



•84 



'"•80" 

 ■79 



•60 



AI2O3 



592 

 1-40 



6-84 



•58 



702 

 441 



7-85 

 1-74 



22-17 



Fe 2 3 



2-00 



FeO 



•85 



201 



399 



•98 



138 



304 



2-65 



•16 



not det . 



MnO 











•03 



■56 



•02 

 1-01 



•07 

 102 



19-38 



tr. 



MgO 



6 38 



13-34 



4-41 



367 



1-30 



CaO 



21 03 



19 14 



3-89 



15-02 



•82 



•88 



113 



28-31 



4-62 



SrO.. 















tr. 





•80 



BaO 















109 



Na 2 



•76 

 1-68 



•62 

 207 



•87 

 1-34 



2-69 

 1-38 



2 51 

 2-41 



3-28 

 1-36 



2-78 

 2 66 



•27 



•09 



4-46 



K 2 



5-58 



H 3 0- 



23 



•24 



•25 



09 



05 



•20 



•08 



•03 \ 

 •63/ 



2'50t 



H 2 + 



249 



1-76 



3 60 



1-81 



•37 



04 



120 

 •15 



•81 



P s 6 





C 



•08 

 22-71 



















C0 2 



28 89 



1-91 



33-05 





tr. 



•08 



43 55 



tr. 









100-33 



100-10 



100-06 



99 93 



100 02 



100 33 



100-16 



99 -85 



99-72 



Sp. gr 



2 748 



2 779 



2 687 



2-654 



127 



2 681 



125 



2 680 



2722 



2-822 









(?i ■ :.. 



106 



78 



102 



130 



241 



262 



403 







* Mean of two analyses, t At 90° C. '17% water given off. 



