THE ORE DEPOSITS. 79 



lie near that rock in the portion of the mine above the water level. There 

 is, moreover, a large block of undisturbed ground, which has already been 

 described, page 32, and which in a measure separates the west ore body 

 from the crushed limestone near the quartzite. It is difficult to tell exactly 

 how this undisturbed ground deflected the ore solutions, but it is likely that 

 it was one of the principal causes of the arrangement of the ore bodies. 

 There are large blocks of ground in the upper levels of the Richmond mine, 

 near the quartzite, which have been incompletely explored, and it is by no 

 means improbable that new ore channels may be revealed and important 

 ore bodies may be discovered by careful prospecting in that direction. 



