404 GEOLOGY AHD GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
■ 
WACU WETA MINE. 
I 
The Maroon Tunnel Company owns the mine which is situated on the Wacu 
Weta claim, on the northwest slope of Bull Cliff. It is being worked under lease. 
The developments consist of an incline shaft 308 feet deep and about 500 feet of 
drifting and crosscutting. The production of the mine is not large. 
The rock at the surface is the Bull Cliff phonolite, but the shaft quickly passes 
into latite-phonolite, which continues to the bottom. About 80 feet southeast 
from the bottom of the shaft a sharply defined, vertical, apparently intrusive con¬ 
tact of latite-phonolite and breccia is exposed in a crosscut. 
The shaft is sunk on a sheeted zone dipping about 80° SE. The vein varies 
from 1 to 4 feet in width and is not much oxidized. It is said to be the Klondike 
vein of the Isabella mine, but this seems very questionable. An ore shoot averag¬ 
ing 25 feet long and 4 feet wide was stoped from the surface near the shaft to the 
second or 150-foot level; it pitched steeply to the southwest, but did not continue 
below level 2. On level 4, at a depth of 300 feet, a small bunch of ore was encoun¬ 
tered 30 feet south of the shaft, but gave out at an irregular mass of dense phonolite. 
A 1-inch manganese seam enters the phonolite and is seen to turn abruptly toward 
the east. In 10 feet it crosses a ,3-inch seam of soft oxidized material, and at the 
junction a few carloads of $20 to $40 ore were mined. 
DEADWOOD MINE. 
PRODUCTION AND DEVELOPMENT. 
The New Zealand Mining Company, controlled by the Woods Investment Com¬ 
pany, owns the Deadwood claim, on which the Deadwood mine is situated. It lies 
south of the saddle between Bull Hill and Bull Cliff. The combined production of 
the Deadwood and Trachyte mines probably does not exceed $200,000. A num¬ 
ber of shafts explore the country rock near'the surface, and the main shaft, which 
is about 700 feet deep, has seven levels; the elevation of the collar is 10,545 feet. 
Drifts and crosscuts aggregate 7,000 feet. Only the first three levels could be 
examined. 
GEOLOGICAL FEATURES. 
The shaft and main workings of the mine are in a lobe of breccia reaching down 
from the north. The surrounding latite-phonolite is penetrated in several places. 
The contact is nowhere sharp, the indication being that the breccia has been locally 
derived from the massive rock. This contact is seen on level 1, 225 feet X. 40° W. 
frcm the shaft. It is in approximately the same relative position on level 3. On 
the same level, about 300 feet northwest from the shaft, the end of the crosscut just 
enters a soft, partially oxidized breccia, of which no indication was found on the 
surface. Latite-phonolite is again cut near the end of the drift on level 3, about 
250 feet south of the shaft. A small mass of dense phonolite, which is probably a 
northwesterly trending dike, was observed in two places on level 1, 200 feet north¬ 
west of the shaft, but not elsewhere. 
