CLINTON COUNTY. 



305 



tliis mass has been renioveil, and tlie surface now exposed presents an unequal distribution of 

 It, but in no place an amount worth tlie expense of raising. It presents, however, the same 

 general arrangement as all other veins, that of parallel bands or stripes. In some portions the 

 ore is in the proportion of one half, the other half being white flint. Considered as a vein, its 

 strike or course is west of north, or N. 10° W., and its dip west. Ten or fifteen feet beneath 

 the solid plate of ore, a passage has been made in the solid rock for at least one hundred feet. 

 It commences on the jiorthern slope, and runs nearly south. No ore was discovered by 

 this procedure, and it could not have been reached, even if there is an abundance of ore, in 

 consequence of the dip of the vein. The entrance into the rock being made on the eastern 

 side of the vein, and parallel to its course, the adit or drift seemed to be beneath it ; whereas 

 if the drift had been made east and west, it would have crossed it at a point west of the pre- 

 sent drift. 



The great difficulty of obtaining ore at this place, is probably in consequence of the great 

 derangement produced by several transverse dykes. In the distance of one hundred feet on 

 the line of the ore, there are nine dykes, a ground plan of which I have given in the following 

 diagram (fig. 82), from which we have a strong probability that they have had more or less 

 to do in obscuring the true relations of this mass of ore. The dykes vary in width, but their 

 several courses are parallel. Their directions are N. 55° E. 



a, a, Main vein traversed by several parallel dykes. 



The relative position of the four veins which I have now described, may be illustrated, as 

 a whole, by the following section. They lie nearly in the same east and west range, pursu- 

 ing in general a course nearly north and south, while the ridges upon which they outcrop 

 strike north-northeast and south-southwest. 



Geol. 2d Dist. 39 



