TRANSACTIONS 



OF THE 



^lolia ,^cotian Jiuititute of Science. 



sp:ssiox of 1903-1904. 



Distribution of Bedded Leads ix Relation to Mining 

 Policy.* — By Prof. J. EdxMUND Woodman, A. M., S. D., 

 School of Mining and Metallurgy, Dalhousie University, 

 Halifax, N. S. 



{Read 13th March, 190r,.\) 



For purposes of stud}', the gold-bearing veins of the province 

 may be rouglily divided into two general classes, as regards 

 their relation to the country rock — bedded leads, with their 

 accompanying " angulars," and cross veins. This grouping is in 

 part arbitrary, and real or apparent exceptions will occur to any 

 one ac(|uainted with more than a few of the gold districts. But 

 it contains the essential elements of a true classiiication — the 

 genetic principle. For from another point of view, the veins 

 may be regarded as (1) those formed during the period of fold- 

 ing of the rocks, practically group one as giv^en above ; and (2) 

 those formed subsequent to the folding, in cross fissures, joints, 

 or faults, which would be group two. 



The phrase '■ fissure vein " is to be avoided as far as possible 

 in discussing either of the two classes. For, in the first place, 



*CoNTRIBUTrONS FROM THE SCIESCE LABORATORIES OF DaLHOUSIE UNIVER- 

 SITY —[GeOLOGY AND Mineralogy]. 



tPrinted in the present part by permi.s-ion of the Council of the Institute. Origi- 

 nallj' read at a meeting of the Mining Society of Nova Scotia 



Proc. & Trans N. S. Inst. Sci., Vol. XL Trans. L. 



(168) 



