486 GEOLOGY AND GOLD DEPOSITS OF THE CEIPPLE CREEK DISTRICT. 
Dead Pine claim. The dike itself is so irregular, however, in the vicinity of the 
granite-breccia contact, and there are so many other small intrusions of phonolite 
in the granite, that it is impossible to trace its exact course without actually drifting 
on it. On the old level 8, for example, there is a small curved east-west dike, just 
south of the incline, which probably joins the Montana dike to the west, and 200 
feet southwest of the incline is a nearly north-south dike which probably joins the 
Montana dike to the south. In the southern half of the Dead Pine claim the 
Montana dike has not been exposed, though it can not lie very far east of the main 
drift on the 825-foot level. It probably has here a nearly north-south cQurse. 
North of the Oliver shaft it is visible on the 250-foot level in a crosscut 115 feet 
east of the main lode. From this point it swings northwestward, crossing the line 
of the main lode and continuing into Ajax ground. Its average dip in this part of 
its course is about 80° SW. The width of the Montana dike varies from 10 to 25 
feet. 
The East-West dike crosses the Dead Pine claim at the surface about 75 feet 
north of its south end line. It is usually about 10 feet wider and dips to the north 
at an angle of 65°. It is cut on the 250-foot level 170 feet south of the shaft, on 
the 525-foot level 50 feet south of the shaft, on the 625-foot level at the shaft, on 
the 725-foot level 65 feet north of the shaft, and on the 825-foot level 125 feet north 
of the shaft. 
There are several other small phonolite dikes encountered in the mine, but 
they are less persistent and usually even more irregular than those described. 
FORM AND STRUCTURE OF THE ORE BODIES. 
The principal ore bodies thus far discussed have occurred in the northern part 
of the mine, near the old incline. One of these pay shoots is in the main fissure 
zone, between the Montana dike and the granite-breccia contact, and attains its 
maximum development on the old level 5, or 250-foot level of the Oliver shaft. 
This is a narrow sheeted zone in granite similar in character to the short lodes 
occurring in connection with the large southwest ore body of the Ajax mine. 
Another ore body has been stoped in the more northerly of the two cross lodes. 
This pay shoot begins just above the old level s and has been stoped down to the 
old level 10. On the old level 11, or the present 625-foot level, the ore becomes 
too narrow to stope. This ore body was rarely over 3 feet wide and probably 
nowhere more than 50 feet in length. 
Between the 250-foot and 725-foot levels bunches of good ore occur on one or 
both sides of the Montana dike at the intersection of the dike of the main Dead Pine 
fissure zone (fig. 19). A few small bodies of ore have also been found at other 
points along the contacts of the Montana dike with the granite, but these have 
been of little importance. 
No pay shoots have yet been found in the Dead Pine lode between the Montana 
dike and the East-West dike. Throughout this part of its course the lode is a well- 
defined sheeted zone in granite, occasionally passing through small, irregular dikes 
of phonolite. Some of these dikes have a general north-south course and are occa¬ 
sionally followed for a hundred feet or more by the fissure zone, as may be seen on 
