370 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
Thirty feet west of the shaft is a 1-foot basalt dike parallel to the second one; 
it is not drifted on as yet, but is said to constitute ore. No developments had been 
made on the 580-foot level. 
The values seem to be intimately associated with the dikes, but no other condi¬ 
tions, such as cross veins or junctions, seem to influence the distribution of the 
pockets and pay shoots in these dikes. 
TRAIL MINE. 
The Trail mine is situated on the southwestern slope of Bull Hill, just south of 
the Trilby. It is at present controlled by the Woods Investment Company. The 
mine has not been regularly worked for some time, but formerly received considerable 
exploitation, though the production has not been great. The workings consist of a 
vertical shaft about 500 feet deep and several levels, of which only the two tunnel 
levels are accessible. 
Both breccia and latite-phonolite occur in this mine. As in the Blue Bird, Gold 
Sovereign, and Trilby, the latite-phonolite appears to flatly overlie the breccia. The 
contact between the two is usually indistinct through brecciation of the latite- 
phonolite, but in the lower Trail tunnel the contact is sharply defined and dips flatly 
southwest. Numerous phonolite dikes, economically unimportant, are encountered 
in the various workings. Their direction is variable, but usually is between north 
and west. Three basalt dikes of a general northerly course are cut in the lower 
tunnel. One of them corresponds in position, strike, dip, and width to the basalt 
dike which passes through the Trilby and Gold Sovereign mines. 
Each tunnel follows a nearly north-south vein which dips steeply to the west. 
It is said and seems probable that they are on the same vein, though the vein in the 
lower tunnel has a 4- to 10-inch streak of dense fluorite, while that above appears as 
only a narrow crack in oxidized rock. There are short stopes, timbered so that their 
height can not be ascertained, in several places along each tunnel. Eighty feet south 
of the shaft, on the upper tunnel level, a “mud vein” dipping steeply west and strik¬ 
ing a little east of north crosses the main vein and is said to have made the best ore in 
the mine. The stope is not large. A stope 50 feet long, 25 feet deep, and 20 feet 
high has been opened just north of the shaft on the main vein. The ore was of 
medium grade. 
DANTE MINE. 
The Dante mine, together with the Whisper block of the Gold Sovereign mine, is 
situated near the High Line track on the southwestern slope of Bull Hill, at an eleva¬ 
tion of about 10,350 feet. The Jackson shaft of the Gold Sovereign mine is located 
about 700 feet southwest of the Dante shaft. The Dante Gold Mining Company, 
owning the Dante claim, is controlled by the Reed Investment Company, of Colorado 
Springs, but the property is worked by a number of lessees; sometimes as many as 
eight sets are at work. The production is considerably over $100,000, and a similar 
amount has been produced by the adjacent Whisper block. 
The developments consist of the Dante shaft, 450 feet deep, from which six 
levels are turned. The various veins are opened by a complicated network of 
drifts and crosscuts, probably aggregating 4,000 feet on both properties, but not 
extending beyond a circle with a diameter of 400 feet. The Whisper block of the 
