195 



worked to a depth of 1,610 feet (490 m.) on a dip varying 

 from 30 at the surface to 43 at a vertical depth of about 

 900 feet (275 m.). This is the deepest mine on an inter- 

 bedded vein in Nova Scotia. 



In the northeastern part of the dome a number of veins 

 such as the Boston-Oldham and Frankfort proved rich on 

 their curve towards the apex of the anticline. Some veins 

 have been worked extensively on the strike but to shallow 

 depth. 



North of the centre of the dome, several leads were 

 enriched and thickened at the intersection of angulars 

 entering obliquely from the southwest or footwall side and 

 leaving on the northeast. The enriched and thickened 

 part of a lead comprised between the point of entrance 

 of an angular and that of leaving, is generally less than 20 

 feet (6 m.) in length and 100 feet (30 m.) in depth, forming a 

 small ore-shoot called gold or pay-streak. Several very 

 rich gold-streaks have thus been formed on the Blue, 

 Hall and other leads where intersected by the Britannia 

 angular, the ore yielding from I to 100 ounces of gold per ton. 



In the northwestern and southwestern part of the dome a 

 few leads have also been enriched at the intersection of 

 angulars coming in on the footwall side from the southwest 

 and northeast respectively. In the Blackie vein the gold 

 was concentrated in arsenopyrite pockets, some of which 

 carried as much as 5 to 7 ounces of precious metal, and 

 outside of these the vein had little or no value. 



In 1892, J. E. Hardman, manager for the Napier com- 

 pany, sank a vertical shaft 113 feet (35 m.) deep on the 

 anticline on Area 102, cutting at the apex seven superim- 

 posed saddle-veins that do not outcrop at the surface. 

 Two of these were sufficiently auriferous to justify further 

 development. This and similar developments in other 

 districts point to the existence of a pay-zone extending 

 to a considerable depth in which a succession of auriferous, 

 interbedded, quartz veins of similar character and extent 

 lies superimposed one above the other. 



At a short distance west of Hardman's vertical shaft the 

 Harrison, South Ohio and some other adjacent veins are 

 thickened several times their usual size on the apex of the 

 anticline where they curve sharply within 10 feet (3 m.) 

 and form ore-shoots pitching west about 20 . 



In the Hay lead lying outside of the district, 1,800 feet 

 (550 m.) north of the anticline, an isolated pocket carrying 

 35063— 13I 



