60 GEOLOGY OF MOOSE RIVER GOLD DISTRICT — WOODMAN. 



as a whole, nearly or quite homogeneous ; and quartz crystals 

 appear never to have been found in layers, each with its longest 

 axis perpendicular to the vein walls. The ribbony type referred 

 to is the most abundant, and is best seen where, as often hap- 

 pens, thin laminae of slate are included in the gangue, lying 

 parallel to the mains walls. 



The data relative to the ores will be considered under a 

 separate head. 



DISTRIBUTION. 



Stratijied leads. — The veins of Moose River belong to two 

 groups, as regards their relation to the country rock — stratified, 

 called "leads" throughout the province, and "cross" orunstrati- 

 fied veins. Connected with the former are the "angulars" 

 (sometimes contracted to " anglers ''). The distribution of the 

 leads and angulars is erratic, the only sj'stem being their con- 

 finement within a zone represented by the width of the mining 

 district north and south. This is because the whole field is a 

 unit of slate, inclosed on either side by the overlying thick 

 quartzite. There is whin within this zone, but it is not so 

 abundant or important as in most districts in the series. 



The nearest approach to a S3'stem is the scarcity of leads of 

 any size on the subsidiary anticline, below the Jo. Taylor belt. 

 Instead, the slate is full of minute stratified veinlets and seams 

 of pyrite and arsenopyrite. These are present more or less 

 throughout the whole thickness of rocks exposed in the district, 

 but are especially characteristic of this part. 



It was early thought that the veins were more numei'ous 

 on the margins of the field, especiall}^ at the north, and decreased 

 in abundance toward the center ; but recent developments show 

 that this apparent distribution was due in part to the chance 

 order of opening. 



Erratic veins. — The erratic veins belong to no particular 

 series or age. They are unsystematically distributed, cut the 

 bedded leads at all angles, and cross each other. It may be 

 remarked here that in no case do veins which belong distinctly 



