Mine detail: Pogo

Previously called 'Liese Creek'

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Location

Lat / long:

64.45271, -144.91283

Resource(M)

Primary:	Gold
Ore:	Arsenopyrite, Bismuth, Bismuthinite, Chalcopyrite, Gold, Pyrite, Pyrrhotite, Sphalerite, Tetradymite, Lollingite, Maldonite
Gangue:	Biotite, Dolomite, Feldspar, Quartz, Sericite

Production

Operation type:	Unknown
Development status:	Prospect

Geology

Alteration processes:

The Liese Zones all are associated with vein and replacement type textures. The veining textures are characterized by two styles of quartz veins and alteration assemblages. The early veins are typified by white quartz containing arsenopyrite, chalcopyrite, pyrite, pyrrhotite and loellingite with secondary biotite in selvages up to 1 meter in width. The later veins are typified by gray quartz as stockwork veins and replacement selvages containing arsenopyrite and pyrite, along with secondary disseminated sericite and dolomite. It is common to find the sericite-dolomite alteration overprinted upon the earlier secondary biotite. Some silica flooding is observed in the gneiss and intrusive (M. Smith, oral communication, 1999).

References

DEP	10307233
Reference	{Deposit:: Smith, Moira, 1998, 1998 Exploration update on the Pogo property, Goodpaster River district, Alaska [abs.], in Mining, Alask * State and Native Lands: Anchorage, Alaska: Alaska Miners Association, 1998 Proceedings, p. 65.}{Deposit:: Teck Resources Inc., 1998, Pogo project advanced exploration program, Stage II application and plan of operations: Teck Resources Inc. report, 75 p.}{Deposit:: Smith, Moira, 1999, Gold mineralization on the Pogo claims, east-central Alaska [abs.], in Cordilleran Exploration Roundup Proceedings: Vancouver, British Columbia, 16th Cordilleran Exploration Roundup, p. 73.}
Reporter	Cameron S. Rombach