152 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
PLACERS. 
Owing to the light, powdery, or spongy form of the gold set free by the oxidation 
of the tellurides, placer deposits have been formed only to a very subordinate extent. 
Penrose states that limited areas of placer ground have been worked at Hull City, 
along Beaver Creek, in Squaw Gulch, Arequa Gulch, and on Wilson Creek. The 
principal placers were found in the northern part of the town of Cripple Creek, on 
the southerly slopes of Mineral and Carbonate hills, particularly in the broad hollow 
on the southwest side of Mineral Hill. A fair amount of gold was taken out from 
this shallow ground in the early days by sluice, rocker, or dry washer; in many 
cases the pay dirt was extracted b} r drifting from little pits or shaits. A certain 
amount of payable ground is said to remain here, and, were water available, a con¬ 
siderable area could probably be washed with profit. The gold appears to have been 
derived from veins in the breccia directly southwest of the summit of Mineral Hill , 
extensive prospecting has, however, thus far failed to reveal any primary deposits 
of value. 
