Olgen

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals chalcopyrite; galena; pyrite; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale PM
Quadrangle map, 1:63,360-scale A-2
Latitude 55.189
Longitude -160.557
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is located on southeastern Unga Island and represents an old claim block on the creek draining the Apollo mine site. It is approximately 1,600 feet northwest of the head of Delarof Bay and 1,500 feet east of the Apollo mine adit portal (Wilson and others, 1988, locality 41). The location is accurate to within 1,200 feet.

Geologic setting

Geologic description

This prospect is a vuggy, oxidized quartz vein that strikes N 38 E and has a strike length of approximately 500 feet (Wilson and others, 1988). It occurs in volcanic rocks of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The vein is exposed in a short adit and may be the southwestern continuation of the Sitka fracture system (Wilson and others, 1988). Sulfides present in the vein include chalcopyrite, galena, pyrite, and sphalerite.
Geologic map unit (-160.559036539517, 55.1881703821225)
Mineral deposit model Epithermal gold vein, Polymetallic vein (Cox and Singer, 1986; model 22c)
Mineral deposit model number 22c
Age of mineralization Eocene or younger.

Production and reserves

Workings or exploration This prospect has been explored by a short adit.
Indication of production None

References

MRDS Number 10308147

References

Reporters S.H. Pilcher
Last report date 1/15/2001