Unnamed (west of upper Millichetah Creek)

Occurrence in Alaska, United States with commodities Silver, Copper, Lead, Antimony, Zinc

Geologic information

Identification information

Deposit ID 10308330
Record type Site
Current site name Unnamed (west of upper Millichetah Creek)

Geographic coordinates

Geographic coordinates: -153.46943, 67.45262 (WGS84)
Relative position This site is at an elevation of about 3800 feet on a ridge 1.5 miles SW of the head of Millichetah Creek. It is in the N1/2 of sec. 35, T. 24 N., R. 24 E., of the Kateel River Meridian. Location is accurate to within 1000 ft. The site corresponds to locality 40 of Grybeck and Nelson (1981).
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Primary
Antimony Primary
Zinc Primary

Nearby scientific data

(1) -153.46943, 67.45262

Comments on the geologic information

  • Geologic Description = This occurrence consists of a grab sample of copper-stained, orange-weathering marble (Nelson and Grybeck, 1981). Marble unit is part of the Devonian and Silurian Skajit Limestone (Nelson and Grybeck, 1980). Sample of marble contained 500 ppm As, 15,000 ppm Cu, 5000 ppm Pb, 7000 ppm Sb, and 7000 Zn. No other mineralization observed in the area.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Koyukuk

Comments on the workings information

  • Workings / Exploration = Brief examination of the area by the USGS in the late 1970s indicated no other mineralization.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF SP018

Bibliographic references

  • Deposit

    Nelson, S.W., and Grybeck, D.J., 1980, Geologic map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-A, 2 sheets, scale 1:250,000.

  • Deposit

    Grybeck, D.J., and Nelson, S.W., 1981, Mineral deposit map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-F, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Grybeck and Nelson, 1981

General comments

Subject category Comment text
Deposit Model Name = Copper-stained limestone
Deposit Other Comments = Located within Gates of the Arctic National Park.

Reporter information

Type Date Name Affiliation Comment
Reporter 21-SEP-99 S.W. Nelson U.S. Geological Survey