SMUGGLER MOUNTAIN. 183 
the shales, and the nature of the contact between shale and ore shows the 
existence of a fault which originated since the ore deposition. From the 
point where the solid body of ore was cut off ore was followed along 
the fault plane for some distance, growing gradually smaller in amount as 
the distance from the main body increased, and finally becoming too poor to 
be profitably worked. This ore consisted of bowlders and angular fragments 
in the breccia and of native silver cementing the fragments, the last being 
evidently a secondary formation. In the Smuggler mine what appears to 
be the same ore body is found, having a general connection with the Smug- 
gler fault, as the ore body in the Mollie Gibson has with the Gibson fault. 
In the Smuggler is found the same rich polybasite and native silver ore 
inclosed in pink spar. Above this, along the fault zone, comes low-grade 
N Ss 
i 
& 
ii : 
ise 
ill 
DEVELOPMENT 
Fig. 7.—Diagram of Smuggler and Mollie Gibson ore bodies. 
lead ore and a body of zinc ore, exactly identical in every respect with the 
zinc ore found at the top of the Smuggler shaft. Taking into consideration 
the fact that the ore body in the Mollie Gibson has been cut off by a north- 
south nearly vertical fault since the ore deposition, and that the Smuggler 
ore body is almost exactly the same as that in the Mollie Gibson, it seems 
probable that the two ore bodies were originally one and have been separated 
by this faulting. Since the east-west striking and southerly dipping faults 
were formed previous to the ore deposition, as is shown in both these mines, 
the displacement of the ore must have been accompanied by the displace- 
ment of the preexisting faults also. It follows from this that the Gibson 
fault along which ore occurs on the Mollie Gibson was originally the same 
as the Smuggler fault on which it is found in the Smuggler. Fig. 7 is an 
