Occurrence, Inactive

Commodities and mineralogy

Main commodities Pb; Zn
Other commodities Cu
Ore minerals arsenopyrite; chalcopyrite; galena; sphalerite
Gangue minerals calcite

Geographic location

Quadrangle map, 1:250,000-scale AN
Quadrangle map, 1:63,360-scale B-7
Latitude 61.42
Longitude -149.39
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located on northwestern slope (1,500 ft elevation) of Mount Eklutna, 3,500 ft southeast of Mirror Lake. Accurate within 1,000 ft. Labeled as 'Lead-zinc prospect' by Clark and Bartsch (1967), locality 38 of Cobb (1972), and locality 28 of MacKevett and Holloway (1977).

Geologic setting

Geologic description

Country rock is greenstone and silicified rhyolite of Jurassic to Permian age. A vertical zone about 3 ft wide contains disseminations and small masses of arsenopyrite, pyrite, sphalerite and galena. In addition, a 2 inch wide calcite vein found within a zone of rusty gouge contains disseminated sphalerite, galena, and chalcopyrite (Landes, 1927).
Geologic map unit (-149.392216897646, 61.4194609010009)
Mineral deposit model Kuroko massive sulfide? (Cox and Singer, 1986; model 28a?).
Mineral deposit model number 28a?
Age of mineralization Jurassic or younger.

Production and reserves

Workings or exploration Surface mapping and sampling.
Indication of production None

Additional comments

Not enough base metal mineralization exposed to encourage development work (Landes, 1927).


MRDS Number A011639


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