344 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
molybdenite. Sylvanite or calaverite occurs sporadically in the dike to the bottom 
of the mine. 
PAY SHOOTS AND LODE STRUCTURE. 
The ore of the Moose mine all occurred in the basalt dike, principally in two 
pay shoots separated by about 100 feet of barren ground. One of these pay shoots 
was at the shaft, the other south of it. The northern body extended from the surface 
nearly to level 6, or to a depth of about 300 feet. It attained its maximum length 
of 160 feet on level 5. The southern pay shoot extended from level 2 to level 5, 
having a vertical range of about 175 feet. Its greatest length, 200 feet, was attained 
between levels 3 and 4 (fig. 38). There was also a small pay shoot north of the 
shaft, between levels 6 and 7. Below level 7, which is 380 feet below the collar of 
the shaft, no body of workable ore has been found. The old stopes are abandoned 
and not safely accessible, so that it is not practicable to study the occurrence of the 
ore. Specimens show, however, that much of it occurred in minute, very irregular 
fissures in the basalt. The latter was altered in the vicinity of the ore to a light- 
gray, aphanitic, almost jaspery mass, probably through the introduction of silica. 
So far as known, the localization of the ore in pay shoots was not determined by 
cross fissures. 
