234 GEOLOGICAL SURVEY OF THE TERRITORIES. 



except a slight deflection of about 3 feet, forming a curve at that point, 

 the lode can be traced downward through the schists for more than 2U0 

 feet in a vertical line. These schists are of a green color, weathering 

 very dark. Quartz and chlorite constitute the two predominating min- 

 erals. Pyrite occurs scattered through it. Structure is slaty, with small 

 veins of quartz traversing at right angles to the plane of the schists. 

 After that debris sets in, and it would require some tunneling or other 

 work of a similar nature to reach the vein. Galenite, intimately asso- 

 ciated with fahlerz (tetrahedrite), at many points forms the main body 

 of ore, and pyrire, sphalerite, and chalcopy rite are not wanting. Quartz 

 mainly composes the gangue. The ore occurs in seams, from the thick- 

 ness of a needle to 9 inches, without, however, showing any symmetry of 

 arrangement. No further work had been done at the time of my visit 

 than the uncovering of a number of points along the vein, in order to de- 

 monstrate the continuation of ore. It is claimed that the extension to 

 the southeast across the cafion has been found, but I did not visit the 

 locality. 



THE ROBERT BRUCE, 



as above mentioned, is the northwestern extension of the Highland 

 Mary, keeping nearly the same course. It has been prospected ior some 

 distance, and the character of ore appears to vary but little from that 

 found below, although the distribution of the several minerals may not 

 be the same. 



THE COMSTOCK LODE, 



formerly called the Mountaineer, is situated on the same hill, about half 

 a mile nearer to the head of the gulch, and south of the Highland Mary. 

 Its strike is a more westerly one — north 75° west. As far as could be 

 observed, it runs entirely in the blue trachyte. It may be, however, 

 that the downward continuation is merely obscured by debris, or rather 

 large masses of broken rocks. Between walls it is on an average 4 to 

 5 feet wide, and has a slight dip to the south. Very little work has 

 been done on this lode, and mainly surface-ores, consisting of galenite, 

 pyrite, &c., have been obtained. 



THE YRETEVA 



is located opposite the Highland Mary, on the east side of the gulch. 

 It strikes a few degrees more to the west than the latter, and has the 

 schists as wall on either side. Farther down the caiion, on Green Mount- 

 ain, the 



GREEN MOUNTAIN LODE 



is situated, striking almost north 45° west. Lower down it runs 

 through the schists, cutting the strike of the latter at an angle of about 

 80°. It continues upward through them, and enters the trachyte, 

 without showing any perceptible change of course. The ore of all the 

 lodes in Cunningham Gulch is of the same mineralogical character, 

 notwithstanding the quantity and distribution of each specific mineral 

 may frequently vary. 



THE PRIDE OF THE WEST 



is also located on Green Mountain, and has an approximate course of 

 north 45° west. Though it cannot with certainty be said to reach down 



