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In some veins two or more parallel shoots have been 

 found. The ore-shoot on the Hard lead, South Uniacke, 

 really consists of two streaks lying 40 feet (12 m.) apart; 

 in the Mulgrave lead, Isaacs Harbour, a shoot 30 feet 

 (9-1 m.) broad lay 180 feet (54-7 m.) below another 12 

 feet (3-6 m.) broad, both pitching west at an angle of 



12°. 



The distribution of the shoots is frequently dependent 

 on some subordinate flexure or crumple in the strata. 

 For example, the large series of ore bodies worked at 

 Renfrew is due to a subordinate undulation in the strata 

 on the south limb of the dome. In this regard each 

 district has its individuality, the structure of one dome 

 never being just the same as that of another. The 

 distribution of the ore-shoots, consequently, is never 

 exactly the same in any two districts. 



In cross veins the ore body is found, in some cases at 

 least, to lie at the intersection of the vein with certain 

 strata or main leads. At Cow Bay, the ore body dips 

 south at the same angle as the strata and follows certain 

 beds at the base of the Halifax formation highly charged 

 with pyrrhotite. The shoot, followed 2,000 feet (610 m.) 

 in the Libbey vein, extended from its intersection with 

 the Mill lead on the north to the vicinity of its intersection 

 with the Jim lead on the south. 



FAY ZONE. 



Certain facts point to the existence in most districts 

 of zones extending to a considerable depth in which a 

 succession of auriferous, interbedded, quartz veins of 

 similar character and extent lie superimposed one above 

 the other. On the north limb of the anticline at Golden - 

 ville several parallel veins lying close together pass under 

 one another, and each has been worked to some depth 

 beneath the overlying veins. An example of superimposed 

 saddle-shape ore bodies on the apex of the anticline is 

 found at Isaac Harbour where the workings of the Burke 

 lead was carried below those of the Archie, McPherson 

 and Saddle leads. So also at Mount Uniacke, a series 

 of ore-shoots was worked on the West Lake, Nuggety, 

 Little and Borden leads where they are affected at succes- 

 sively greater depths by a subordinate crumple with an 

 axial plane dipping north at a high angle. 



