Mitchell and Myers

Prospect, Inactive

Commodities and mineralogy

Main commodities Au; Pb
Ore minerals arsenopyrite; galena; gold; pyrite
Gangue minerals calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale AN
Quadrangle map, 1:63,360-scale A-4
Latitude 61.02
Longitude -148.2
Nearby scientific data Find additional scientific data near this location
Location and accuracy West side of Barry Arm, 1.3 miles northeast of Peak 3,596 of Mount Doran. Accurate within 0.5 mile. Locality 57 of Cobb (1972) and locality 46 of MacKevett and Holloway (1977).

Geologic setting

Geologic description

Johnson (1914) reported a shattered felsic dike, 60 to 67 inches wide, is cemented by quartz stringers up to 8 inches wide that carry gold, arsenopyrite, galena, and pyrite. The felsic dike is Tertiary in age, and strikes N 50 E, and dips 53-75 W. A nearby 3 ft wide quartz vein strikes N 51 W with a 60 E dip, and contains gold, arsenopyrite, galena, and pyrite in a quartz-calcite gangue. Samples from the dike contain as much as 0.34 oz/ton Au (Johnson, 1914). The felsic dike cuts metasedimentary rocks of the Valdez Group.
Geologic map unit (-148.202076079537, 61.0194301559698)
Mineral deposit model Chugach-type low-sulfide Au-quartz veins (Bliss, 1992; model 36a.1?) or Epithermal Au vein?
Mineral deposit model number 36a.1?
Age of mineralization Tertiary or younger; vein cuts a shattered Tertiary felsic dike.

Production and reserves

Workings or exploration Explored by a limited number of open cuts. Samples from the dike contain as much as 0.34 oz/ton Au (Johnson, 1914).
Indication of production None

References

MRDS Number A011661
Reporters D.P. Bickerstaff (USGS contractor); S.W. Huss (USGS)
Last report date 7/30/1998