Occurrence in Alaska, United States with commodities Silver, Copper

Geologic information

Identification information

Deposit ID 10307825
Record type Site
Current site name Round

Geographic coordinates

Geographic coordinates: -155.66793, 62.89045 (WGS84)
Relative position The Round occurrence is situated about 40 meters north of VABM Round at an elevation of 1,550 feet (472 m) in the NW1/4 sec. 4, T. 32 N., R. 43 W., of the Seward Meridian. The reporter visited the site in 1978.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Silver Primary
Copper Secondary

Materials information

Materials Type of material
Epidote Gangue
Quartz Gangue


  • (Local) None.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -155.66793, 62.89045

Comments on the geologic information

  • Geologic Description = The Round occurrence consists of an iron-stained quartz-epidote stockwork in hornfels of the Late Cretaceous Kuskokwim Group flysch (Bundtzen and Laird, 1983). The occurrence is poorly exposed and mainly observed in talus and rubble crop. No surface dimensions were measured, and its extent is unknown. Selected surface samples contain up to 5.43 grams/tonne silver and 99 ppm copper (Bundtzen and Laird, 1983).

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the workings information

  • Workings / Exploration = Selected surface samples contain up to 5.43 g/tonne silver, and 99 ppm copper (Bundtzen and Laird, 1983).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF MG006

Bibliographic references

  • Deposit

    Bundtzen, T.K., and Laird, G.M., 1983, Geologic map of the McGrath D-6 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 79, 1 sheet, scale 1:63,360.

Comments on the references

  • Primary Reference = Bundtzen and Laird, 1983

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c).

Reporter information

Type Date Name Affiliation Comment
Reporter 25-NOV-98 T.K. Bundtzen Pacific Rim Geological Consulting