352 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
where the lode enters the dike from the southeast a zone of Assuring usually branches 
which continues northeast along the foot-wall contact of the dike. This is narrow 
and contains pyrite, but no ore. The C. K. & N. lode has a general strike of N. 75° E., 
but it is a rather curved and irregular zone of Assuring, part of this irregularity 
being due to a number of cross fissures, some ol them having the same general trend 
as the El Paso and Tillery lodes. The dip of the lode varies, but is practically 
vertical. 
The intersection of the El Paso and C. K. & N. lodes has been exposed on all 
four levels, but the exact relation of the two lodes is not decisively shown. On 
level 2 the C. K. & N. lode is offset about 10 feet at the intersection, but it is not 
certain from this that the El Paso is the younger lode.. No corresponding dis¬ 
placement was noted on the other levels. On level 1 the C. K. & N. lode runs 
S. 83° W. for about 150 feet from the El Paso lode, the dip being vertical. The 
lode then turns S. 40° W. along an intersecting fissure zone, and follows this course 
for about 100 feet before resuming its normal strike. This cross-fissure zone dips 75° 
NW. The fissure zone continues beyond the C. K. & N. lode both to the northeast 
and southwest, containing some soft, gray gouge and rather crumbling pyrite. It 
might be regarded as a simple faulting of the C. K. <fe N. lode were it not for the fact 
that the ore of the latter lode continued without change along the faulting or inter¬ 
secting fissures. The same fissure zone appears also on level 2, and has been fol¬ 
lowed for some distance in a drift (fig. 43). On this level, near the C. K. & N. line, 
the C. K. & N. lode is offset by a second cross-fissure zone, striking N. 30° E. This 
fissure zone also dips northwest about 75°. It is similar to the cross lode just 
described, but, unlike that fissure zone, contains no ore, and seems clearly to fault the 
C. K. & N lode. It is a well-defined sheeted zone in the granite, one of the fissures 
near the hanging wall containing a soft, gray gouge of sheared granite, with some 
pyrite. Similar cross fissures, usually containing a little soft gouge and pyrite, 
cross the C. K. & N. lode east of its intersection with the El Paso. They usually 
strike about N. 30° to 35° E. and dip about 75° NW. Some cross the C. K. & N. 
with no apparent displacement of the latter. About 100 feet east of the El Paso 
lode, on level 1, the C. K. & N. lode apparently ends at one of these fissure zones. 
Whether the C. K. & N. is actually faulted or merely terminates at this cross Assuring 
is unknown, as the continuation of the lode has not yet been identified. The same 
cross-fissure zone apparently cuts off the eastern part of the C. K. & N. on level 2, 
about 60 feet east of the El Paso lode. A few feet beyond this point the El Paso 
dike crosses the line of the 0. K. & N. lode (fig. 39, p. 350), which is supposed to 
turn northeast and follow the dike. As there is a difference of only about 20° 
between the normal trend of the lode and the course of the dike, the Assuring 
was probably deflected along the dike contact in preference to taking an oblique 
course through the phonolite. In this part of its course it dips 65° to 70° NW., 
conforming to the usual dip of the dike. This change of dip was observed also at 
the east faces of the drifts on the C. K. & N. lode on levels 3 and 4, as these faces 
were at the time of visit. Developments on levels 3 and 4 had not then reached 
such a stage as to throw much additional light on the relation of the C. K. & N. 
lode to other structural features in the mine. 
