VALLEY VIEW VEIN SYSTEM. 



VEINS IN THE STONE CABIN WORKINGS. 



135 



The Stone Cabin shaft had followed a strong vein from near the surface to a 

 depth of 400 feet at the time of the writer's last examination (fig. 31). This vein 

 varies in thickness from 1 to 8 feet, averaging perhaps 3 feet. It strikes N. 

 45 to 50 E., and is evidently one of the main east- west veins of the Valley 

 View system, which here swings around more to the north. From the surface to 

 the 200-foot level it dips steeply to the southeast, and thence to the 400-foot level 

 it is vertical. 



About 30 feet east of it a parallel vein is encountered on the 100-foot level, 

 but it is so much broken up by small faults that it can not easily be followed. 

 These faults strike chiefly N. 25 to '40 W., and dip southeast at an angle of 



FIG. 31. Cross section of veins in Stone Cabin workings. 



55. They are probably auxiliary to the main Stone Cabin fault, which must 

 be close at hand, judging from its position in the near-by Silver Top workings. 

 On the 200-foot level the same vein is encountered, at the same relative position 

 with regard to the main vein. Here, being farther away from the eastward- 

 dipping fault, it is not broken. On the other hand, it is not so heavy as above, 

 and consists of two diverging branches, each 1 foot thick, which unite in the bottom 

 of the crosscut. On the 400-foot level, 200 feet below, this vein was not 

 recognized. 



Thus there is a single nearly vertical strong vein in the Stone Cabin, as 

 in the Valley View workings, with another lesser vein parallel to it on the 



