Howard Creek

Occurrence in Alaska, United States with commodities Copper, Lead, Nickel

Geologic information

Identification information

Deposit ID 10001386
MRDS ID A012128
Record type Site
Current site name Howard Creek
Related records 10135127

Geographic coordinates

Geographic coordinates: -149.91332, 67.3797 (WGS84)
Relative position This site is at an elevation of about 4,800 ft, approximately 5 miles south-southwest of Minnie Creek Lake and a mile east of the head of Howard Creek (sec. 36, T. 30 N., R. 11 W., of the Fairbanks Meridian). The location is accurate within a 1/2-mile radius.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Lead Primary
Nickel Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrrhotite Ore
Quartz Gangue

Alteration

  • (Local) Oxidized Fe sulfides.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -149.91332, 67.3797

Comments on the geologic information

  • Geologic Description = This occurrence consists of widely but very sparsely distributed cherry-sized pods of quartz and pyrrhotite with traces of galena and chalcopyrite in chloritic schists (Mulligan, 1974). Goethite stains are found around these pods. Pyrite veinlets which occur along joints and fractures in the schist contain trace amounts of copper. Bedrock near the occurrence is mapped (Dillon and Reifenstuhl, 1995) as Lower Paleozoic to Proterozoic, interbanded quartzite and graphitic albite-chlorite-muscovite-quartz schist near a contact with Lower Paleozoic to Proterozoic calcareous schist and marble. Mulligan (1974) described the host rocks as chloritic schists with quartz, muscovite, garnet, ankerite-magnesite, and graphite.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Koyukuk

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012128
USGS Alaska Resource Data File ARDF CH034

Bibliographic references

  • Deposit

    Brosgi, W.P., and Reiser, H.N., 1964, Geologic map and section of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1-375, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-457, 1 sheet, scale 1:250,000.

  • Deposit

    Mulligan, J.J., 1974, Mineral resources of the Trans-Alaska Pipeline corridor: U.S. Bureau of Mines Information Circular 8626, 24 p.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Chandalar and Wiseman quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-340, 205 p.

  • 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

    DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.

  • Deposit

    U.S. Bureau of Mines, 1978, Mineral appraisal of the proposed Gates of the Arctic Wilderness National Park, Alaska, A preliminary comment: U.S. Bureau of Mines Open-File Report 109-78, 29 p., 4 sheets.

  • Deposit

    Cobb, E.H., and Cruz, E.L., 1983, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in the Chandalar quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-278, 91 p.

Comments on the references

  • Primary Reference = Brosgi and Reiser, 1964

General comments

Subject category Comment text
Deposit Other Comments = This location was noted by Brosgi and Reiser (1964) as an occurrence of metallic minerals that contained Cu and Ni. The Ni content was determined by X-ray analysis.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-1999 J.M. Britton U.S. Geological Survey