92 



Transactions. 



The following section (fig. 4) shows how the groups of quartz lenses 

 pitched strongly to the north along the strike of the vein. 



Fig. 4. — Section at Boatman's. 



The quartz-zones shown were the points of attack of the several com- 

 panies that operated in the district, each zone consisting of a series of more 

 or less disconnected blocks or lenses of quartz. The vein dipped uniformly 

 to the east, except in the Specimen Hill lease, where the dip was very 

 irregular. This was also the poorest part of the ground. The Welcome, 

 which was for many years the best dividend-payer of the group, was 

 worked immediately below the Specimen Hill, but apparently on a different 

 belt of quartz. A good deal of antimony-ore occurred in this mine, and 

 gold film or " paint" on clay selvages was frequently met with, doubtless 

 indicating secondary enrichment. Mining at Boatman's has declined very 

 much, and work is now limited to intermittent tributers and occasional 

 prospectors. 



(2.) Murray Creek Group. 



Energetic - Wealth of Nations Mine. — This mine is worked on a main or 

 hanging-wall line of blocks, with a subordinate line of quartz on the foot- 



wall of the formation 

 or zone, about 200 ft. 



''^IISI l'!!''''!''''''^'M 





Fig. 



-Section of Wealth op Nations Vein. 



to the east. This latter 



has been worked in 



former times in Nos. 6, 



7, and 8 levels. Both 



lines are practically 



vertical, av i t h local 



irregularities, but the 



hanging- wall line shows 



a slight westerly dip in the northern workings. Further, this hanging-wall 



line appears to carry two more or less definite seams of quartz, about 20 ft. 



apart, with a belt of altered rock between (fig. 5). 



The blocks generally run in a continu- 

 ous line from the surface downwards, with 

 frequent pinches in their course, and a fairly 

 uniform northerly dip along the strike (fig. 6). 

 The blocks show great variations and 

 irregularities, and are becoming smaller in 

 the deeper levels. They are frequently split 

 by " horses," and the stone is generally 



Fig. 6. — Quartz Lenses, Wealth 

 OF Nations Mine. 



mottled and seamv. 



