Peak 2710

Occurrence in Alaska, United States with commodities Copper, Zinc, Silver, Molybdenum, Lead, Tin, Thorium, Uranium

Geologic information

Identification information

Deposit ID 10003336
MRDS ID A106080
Record type Site
Current site name Peak 2710

Geographic coordinates

Geographic coordinates: -141.27304, 67.48987 (WGS84)
Relative position Located about 2 mi (3.2 km) southwest of hill 2710, midway between Rapid River and Sunaghun Creek, between two localities shown in Barker (1981, p.65 and 76); located to within 3000 ft (915 m).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Zinc Primary
Silver Secondary
Molybdenum Secondary
Lead Secondary
Tin Secondary
Thorium Secondary
Uranium Secondary

Comments on the commodity information

  • Gangue = manganese oxides

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Galena Ore
Malachite Ore
Sphalerite Ore
Magnetite Gangue

Nearby scientific data

(1) -141.27304, 67.48987

Comments on the geologic information

  • Geologic Description = Locally high-grade lenses of Cu sulfides, sphalerite, galena and magnetite in thermally altered calcareous argillite intruded by rhyolite porphyry dikes and sills. Fe and Ma staining are abundant in contact zone. Mineralization can be traced 75 ft (23 m) in rubble. Nearby rocks include Paleozoic? black phyllite, maroon and green argillite, calc argillite, quartzite and limestone (Neruokpuk Fm.?), and are locally malachite or manganiferous stained (Barker, 1981, p. 64-68, 75-9).

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Sheenjek

Comments on the workings information

  • Workings / Exploration = 'Manganiferous' granite contains <300 ppm Cu, 2.0% Zn, 1500 ppm Pb and 6 ppm Ag (Brosge and Reiser, 1968). Skarn with quartz, magnetite and sulfides contains 8.6% Cu, 8700 ppm Pb, 3800 ppm Zn, 43 ppm Ag. Gossan with malachite contains 8 ppm Mo, 767 ppm Sn, 102 ppm Be, 5500 ppm Cu, 1.1% Pb, 1.2% Zn, 84 ppm Ag and 160 ppm U. Hornfelsed argillite contains 55.6 ppm Th, 14.4 ppm U. Soils contain up to 290 ppm Cu, 4100 ppm Pb, 6400 ppm Zn, 0.9 ppm Ag (Barker, 1981, p. 78).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106080
USGS Alaska Resource Data File ARDF CO012

Bibliographic references

  • Deposit

    Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    Brosgi, W.R., and Reiser, H.N., 1968, Geochemical maps of granitic rocks, Coleen and Table Mountain quadrangles, Alaska: U.S. Geological Survey Open-File Report 323, scale 1:250,000.

  • Deposit

    Barker, J.C., and Clautice, K.H., 1978, Mineral reconnaissance of the Porcupine River region: a summary report: U.S. Bureau of Mines Open-File Report 87-78, 20 p.

  • Deposit

    Barker, J.C., 1981, Mineral investigations in the Porcupine River drainage, Alaska: U.S. Bureau of Mines Open-File Report 27-81, 189 p., 2 sheets.

Comments on the references

  • Primary Reference = Barker (1981)

General comments

Subject category Comment text
Deposit Model Name = Lode; hornfels and sulfide mineralization related to emplacement of rhyolite porphyry.
Deposit Other Comments = See MAS/MILS Sequence # 0020330006 (USBM, 1995)

Reporter information

Type Date Name Affiliation Comment
Reporter 15-OCT-1992 J.M. Schmidt U.S. Geological Survey