Canaba 
department of jWtness 
Hon. CHARLES STEWART, Minister 
CHARLES CAMSELL, Deputy Minister 
Geological &urbep 
W. H. COLLINS, Director 
Bulletin No. 46 
GEOLOGICAL SERIES, No. 47 JULY 21, 1927 
CONTRIBUTIONS TO CANADIAN MINERALOGY 
AND PETROGRAPHY 
OTTAWA 
F. A. ACL AND 
PRINTER TO THE KING’S MOST EXCELLENT MAJESTY 
1927 
No. 2125 
37233 — li 
