Galena Creek - East

Occurrence in Alaska, United States with commodities Lead, Silver, Copper, Barium-Barite

Geologic information

Identification information

Deposit ID 10001760
MRDS ID A012547
Record type Site
Current site name Galena Creek - East

Geographic coordinates

Geographic coordinates: -141.99512, 68.381 (WGS84)
Relative position Location plotted is locality 502 of Barker (1981, pl. A-3), from which massive galena and barite samples were taken during 1977 USBM field work; near crestline of Bear Mountain ridge on east side of Galena Creek; known to within 500 ft (152.4 m).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Lead Primary
Silver Primary
Copper Primary
Barium-Barite Primary

Comments on the commodity information

  • Ore Material = argentiferous galena

Materials information

Materials Type of material
Silver Ore
Barite Ore
Chalcopyrite Ore
Malachite Ore
Galena Ore

Alteration

  • (Local) Intensely propylitized locally

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
    Rock unit name Neruokpuk Formation;Neruokpuk Formation;Neruokpuk Formation;
    Rock description Neruokpuk Formation;Neruokpuk Formation;Neruokpuk Formation;

Nearby scientific data

(1) -141.99512, 68.381

Comments on the geologic information

  • Geologic Description = Well-defined northwest-trending quartz vein system about 6.5 ft (2 m) wide by 1500 ft (454 m) long, contains massive galena, malachite and barite; altered calcareous siltstone host rock contains minor disseminated galena and malachite. Vein contains up to 21% Cu, though malachite is the only Cu mineral noted in more recent reports; older reports list presence of chalcopyrite in greenstone in general vicinity. Geologic setting is structural dome containing Precambrian-Devonian siltstone, phyllite and greenstone which overlie quartzite (possibly Neurokpuk Fm.) and are overlain by thick Devonian conglomerate (Kanayut and/or Kekiktuk Fm.) and Mississippian shale (Kayak Shale). Siltstone more calcareous and less hornfelsed, and has more associated greenstone than bedrock west of Galena Cr. (TB002), and has more intense but less widespread propylitic alteration. Vein system follows contact with underlying massive white quartzite (Barker, 1981, p. 33-40, 106-137).

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both metallic and non-metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Sheenjek

Comments on the workings information

  • Workings / Exploration = Rock sample 2502 has massive galena and barite, and contains 21% Cu, 1.2% Pb, 5500 ppm Zn, 170 ppm Ag, and 33 ppm Mo, nearby samples 2511 and 2512 have up to 10.3% Cu, 1.1% Pb, 1200 ppm Zn, 3.3 ppm Ag, and 22 ppm Mo (Barker, 1981, p. 140).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012547
USGS Alaska Resource Data File ARDF TB001

Bibliographic references

  • Deposit

    Barker, J.C., 1978, Mineral Investigations of certain lands in the eastern Brooks Range: a summary report: US Bureau of Mines Open-File No. 63-78

  • 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

    Brosge', W.P., and Reiser, H.N., 1976, Preliminary geologic and mineral resource maps (excluding petroleum), Arctic National Wildlife Range, Alaska: U.S. Geological Survey Open-File Report 76-539, 4 sheets, scale 1:500,000.

  • Deposit

    Brosgi, W.P., and Reiser, H.N., 1977, Lead-zinc mineralization at Bear Mountain, southeastern Brooks Range, in Blean, K.M., ed., The United States Geological Survey in Alaska: Accomplishments during 1976: U.S. Geological Survey Circular 751-B, p. B8-B10

  • Deposit

    U.S. Geological Survey, 1977, Geological Survey research, 1977: U.S. Geological Survey Professional Paper 1050, 411 p.

  • Deposit

    Hartman, D.C., 1973, Geology and mineral evaluation of the Arctic Wildlife Range, northeast Alaska: Alaska Division of Geological and Geophysical Surveys Open-File Report 22, 16 p., 1 over-size sheet, scale 1:500,000

  • 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

    Cobb, E.H., Mayfield, C.F., and Brosge, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.

Comments on the references

  • Primary Reference = Barker (1981)

General comments

Subject category Comment text
Deposit Model Name = Lode; polymetallic vein

Reporter information

Type Date Name Affiliation Comment
Reporter 20-SEP-1996 K.R. Leonard U.S. Geological Survey
Reporter 20-SEP-1996 D.F. Huber U.S. Geological Survey
Reporter 20-SEP-1996 J.M. Schmidt U.S. Geological Survey
Reporter 20-SEP-1996 J.H. Dover U.S. Geological Survey