MINES OF BULL HILL. 
371 
Gold Sovereign is developed by the Whisper shaft, 475 feet deep, and now being 
deepened further. It is 175 feet north-northwest of the Dante shaft. There are 
seven levels, the lowest 390.feet below the collar. The elevation of the lowest 
level is thus only 9,960 feet, while the Jackson shaft is down to an elevation of 
9,505 feet. 
On the surface latite-phonolite prevails, much of it in the form of loose slide 
rock, at least for 70 feet below the ground. The lower levels are generally in breccia, 
but this contains much latite-phonolite, and the line between the two formations 
is not distinct. A phonolite dike 25 feet wide and striking a few degrees west of 
north traverses the property between the two shafts and is exposed on several levels. 
This dike continues on the north into Logan ground. On the second level of the 
Whisper an equally wide dike of a peculiar latite-phonolite adjoins the phonolite 
on the east. 
The veins as a rule are narrow, consisting of a central seam with quartz, cala- 
verite, and a little fluorite; on both sides of this seam there are usually a few less 
distinct parallel cracks. The north¬ 
easterly trending Fox vein contains 
more fluorite than the others. The 
ore is mainly oxidized, but calaver- 
ite begins to appear in the lower 
levels. At least nine veins have 
been found on the property. Their 
relative positions are illustrated in 
fig. 42. Trending north or north- 
northwest are the Parallel, Whisper, 
and Blue Bird veins. The Parallel 
strikes north-south and stands 
nearly vertical. The Whisper strikes 
N. 30° W. and dips 60° SSW. The 
so-called Blue Bird has the same 
strike, but dips 70° NNE. Among 
the northeasterly trending veins the 
Fox strikes N. 60° E. and dips steeply 
south-southeast. The Moffat and Fig ' 42 ~ Vein systems in Whisper and Dante mines, chiefly on 
, _ . . . . i-i level 4,240 feet below the surface. 
the East veins, neither ot which 
carry much ore, strike N. 40° E. and stand about vertical. The Fox, Whisper, 
and Parallel are the principal productive veins known from all levels. 
The occurrence of the ore is strikingly dependent upon vein intersections. 
One of the principal shoots occurs along the intersection of the Parallel and Whisper 
veins, a line descending at a moderate angle toward the south and crossing the 
Whisper shaft at about level 4. Most of the ore was found on the Parallel vein. 
On level 7 the intersection is found 140 feet south of the Whisper shaft on the line 
separating that property from the Dante mine. Smaller stopes have also been 
opened on the Whisper vein at some distance from the line of intersection. Another 
ore shoot lies along the line of intersection of the Fox and Whisper veins, which 
dips southwest. At the intersection of the Fox and an unnamed vein parallel 
