This document was produced 
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Ce document est le produit d'une 
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de la publication originale. 
Canada 
department of jllmes 
Hon. CHARLES STEWART, Minister 
CHARLES CAMSELL, Deputy Minister 
(geological ^>urbej> 
W. H. COLLINS, Director 
Bulletin No. 46 
GEOLOGICAL SERIES, No. 47 JULY 21, 1927 
CONTRIBUTIONS TO CANADIAN MINERALOGY 
AND PETROGRAPHY 
OTTAWA 
P. A. ACLAND 
PRINTER TO THE KING’S MOST EXCELLENT MAJESTY 
1027 
No. 2125 
Fries, 20 cents 
