CHRYSOLITE MINE. 457 



material. Along the Vulture-New Discovery line considerable unreplaced 

 lime-sand was also found on top of the iron body, extending into the New 

 Discovery ground. 



The main ore body, which was opened by the Vulture No. 1 and Eaton 

 shafts, was traced a little south of east to the extreme southeast corner of 

 the Carboniferous claim, with an average width of about fifty feet and a 

 thickness of twelve to tv/enty feet. In the eastern portion it is opened by 

 Chrysolite No. 3 and Carboniferous No. 1^ shafts. It ends quite abruptly, 

 both on the north and south, though barren vein material is found on either 

 side of it. Cross-cutting drifts soon pass through this vein material into 

 overlying White Porphyry, showing that the ore body was on the crest of 

 a minor ridge or corrugation in the vein material, on either side of which 

 is a shallow basin. 'Jliat to the south has proved barren for a considerable 

 distance into the New Discovery ground. Its form is shown in Section F, 

 where it is seen that the upper portion consists largely of unreplaced lime- 

 stone. An ore shoot was also followed, descending in a northeasterly direc- 

 tion from the Triangle workings, which later developed a large body of ore 

 in the neighborhood of Chrysolite No. 4 shaft. In these older workings 

 the rich ore consisted mainly of carbonate of lead and chloride of silver, 

 with a comparatively small amount of galena. In the vein material a blue- 

 black chert is prominently found, occurring in bodies up to ten feet in thick- 

 ness. From this impure silica it passes into silicious iron and then into a 

 clayey limonite, more or less impregnated with oxide of manganese, the 

 extreme form of which, known to miners as "black iron," is a sort of impure 

 wad. These were the early workings of the mine, made in the upper ore 

 horizon. 



Explorations were also conducted westwardly by a drift running a 

 short distance south from Vulture No. 1 and then west to Vulture No. 2. 

 The workings of Vulture No. 2 shaft disclosed a considerable body of vein 

 material, about twenty-five feet in thickness, immediately underlying the 

 Wash, containing a little ore, and passing to the south into lime-sand. 

 To the west of this is a coarse decomposed quartzite, which is assumed to 

 represent Parting Quartzite at the base of Blue Limestone. The connect- 



' Wrongly marked No. 7 ou the map. 



