This package is overlain to the east by additional Tetagouche Group rocks including pyritiferous
black shale intercalated with felsic volcanic rocks and mafic volcanic rocks of the Hayden Lake Formation as well as wacke and shale of the Push and Be Damned Formation (Fig.
The mine area is comprised of a series of stratiform (manto-like) siliceous, carbonated and argillaceous pyritiferous
zones containing the silver/gold mineralization.
Cross-laminated, fine- to medium-grained, poorly sorted, pyritiferous
metasandstone beds, up to 30 cm thick, are locally present (Fig.
The gold mineralization occurs within pyritiferous quartz veins and veinlets, frequently with traces of chalcopyrite.
A 15 centimetre rockfloat sample of impure, pyritiferous quartz taken from an active illegal mine site near the summit of a hill returned 47.
On Campobello Island it consists of locally pyritiferous
, black to grey siltstone, lithic sandstone, shale and argillite intercalated with thick (up to several tens of metres) units that contain vesicular flows, agglomerate and/or well-developed hyaloclastite sequences.
layer overlying pyritiferous
granodiorite that were cut by quartz stockworks and vainlets.
Black shale beds, which are less common in the section, are highly carbonaceous and pyritiferous
Surface sampling of pyritiferous
Quartz veins, conducted by Cameco Corporation, and documented by D.