282 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
A vein follows the foot-wall side of the phonolite dike. On level 2 the vein is a 
shattered zone varying from a few inches to 2 or 3 feet in width and sometimes 
contracting to a narrow seam. In general the ore is oxidized and contains much 
kaolin, but pyrite occurs in some places. Toward the north end of this level cross 
seams are numerous and ordinarily strike north-northeast. So far as known they 
they contain no values. About 125 feet southeast of the shaft on level 2 the vein 
becomes obscure and can not be traced farther. A north-northeast seam is drifted 
on and is said to connect about 25 feet to the south with a vein parallel and similar 
in character to the vein above described. Whether these two veins are one and the 
same with an intervening jog or two separate veins connected by a cross fissure the 
evidence was not sufficient to determine. Level 3 shows the vein with much the 
same character as above. In the fourth (bottom) level the vein is less oxidized 
and contains kaolin and quartz in places, also much pyrite. 
To the south the phonolite dike forms the hanging wall of the vein, and about 
50 feet south of the shaft the vein seems to break up, sending a number of pyritized 
stringers into the dike. It is as }-et uncertain whether these stringers were mere 
spurs from a continuous vein or whether they eventually carried the vein through 
the dike. 
Down to level 3 the ore is oxidized. Assays alone distinguish that which is 
workable. There seems to be a fairly distinct separation in the range of values, 
however, and ore containing \\ ounces per ton is about the poorest that has been 
mined. Between levels 3 and 4, where the vein is more quartzose, some of the ore is 
unoxiclized, and where sufficiently rich, tellurides can be seen in little veinlets and 
seams, along with oxidized material. 
From the surface south of the shaft down to level 2 a pay shoot has been 
stoped 2 to 4 feet wide and 30 to 60 feet long, being widest near the surface. The 
stope continues for a short distance below level 2, but the vein soon touches the 
under surface of the dike, and this is said to limit the pay ore. The shoot pitches 
to the northwest, and is said to have furnished good ore. 
Another shoot, also pitching to the northwest, occurs about 35 feet south of 
the shaft on level 3. A stope 3 feet wide and 20 feet long is being carried upward. 
The values do not appear to extend below the level. When the shaft had reached 
a depth of about 30 feet below level 3 a small bunch of ore was found and seem¬ 
ingly corresponded in position to a partly interrupted continuation of the ore 
shoot on level 3. The bottom level is being driven to the north in hope of cutting 
this ore shoot, the supposition being that it pitches to the northwest, as do the 
others. No conditions decidedly influencing the position of the ore shoots could 
be ascertained. 
DEPOSITS NEAR GILLETT. 
A number of prospects have been opened on small phonolite dikes north of 
the Sunshine mine. One of these, called the “E. F. C.,” is located on a hill just 
south of the main road between Cripple Creek and Gillett, II miles south-southwest 
of the latter town. The ore, which contains much galena and zinc blende with 
adularia, is found in the granite close to the wall of a phonolite dike, and is said to 
contain up to $40 per ton. 
