256 PROOEEDINGS OF THE CANADIAN INSTITUTE. 



IV. 



tArgentite 



rgentite 



V. 



Nugget 

 Argentite 



Slate 



Quartz 

 .Argentita 



These veins have, with one or two exceptions, the same general 

 strike, i.e., north-west and south-east. They are true fissures, and 

 have, no doubt, all been produced by the same convulsion of nature 

 They are, roughly speaking, membei'S of that series known as ri- 

 handed veins, though they assume at times a sort of brecciated character 

 owing to the presence of bits of slate in the matrix. They dip south 

 with a slight inclination from the vertical. The ore its richest zones, 

 occur in pockets or limited portions of the vein — but generally 

 speaking the vein matter is all availaVjle as average mill-rock. I 

 believe these veins to have been filled from below by hot siliceous 

 waters depositing their mineral constituents in the orders above men- 

 tioned. The richest oi-e it is said commonly occurs at the contact of 



