Cape Nome

Occurrence in Alaska, United States with commodities Chromium, Fluorine-Fluorite, Gold, Chromium, Fluorine-Fluorite, Tungsten

Geologic information

Identification information

Deposit ID 10002009
MRDS ID A012854
Record type Site
Current site name Cape Nome

Geographic coordinates

Geographic coordinates: -165.01047, 64.43651 (WGS84)
Relative position Cape Nome is on the coast of Norton Sound 12.5 miles southeast of Nome. The map location is at an elevation of about 250 feet on the north side of the Nome-Council road, in section 23, T. 12 S., R. 32 W., Kateel River Meridian. This is locality 55 of Cobb (1972 [MF 463], 1978 [OFR 78-93]); the location is probably accurate to within 1 mile.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Chromium Tertiary
Fluorine-Fluorite Tertiary
Gold Secondary
Chromium Secondary
Fluorine-Fluorite Secondary
Tungsten Secondary

Materials information

Materials Type of material
Chromite Ore
Fluorite Ore
Goethite Ore
Gold Ore
Scheelite Ore
Biotite Gangue
Chlorite Gangue
Garnet Gangue
Muscovite Gangue
Sericite Gangue
Sphene Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -165.01047, 64.43651

Comments on the geologic information

  • Geologic Description = Bedrock at Cape Nome is mostly granitic orthogneiss (Sainsbury, Hummel, and Hudson, 1972 [OFR 72-326]). In an investigation of the orthogneiss for radioactive minerals, heavy mineral analysis revealed trace amounts of chromite (one location), fluorite, and possibly scheelite (White and others, 1953). Gold, claims have been located in the Cape Nome area (Kardex site Kx 286, Heiner and Porter, 1972). The orthogneiss reportedly is late Precambrian in age (Patrick and McClelland, 1995).
  • Age = Patrick and McClelland (1995) report a uranium/lead age for the orthogneiss at Cape Nome of 676 +/- 15 million years.

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 Nome

Comments on the workings information

  • Workings / Exploration = Quarries for road construction materials are present in the Cape Nome area.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012854
USGS Alaska Resource Data File ARDF NM299

Bibliographic references

  • Deposit

    White, M.G., West, W.S., and Matsko, J.J., 1953, Reconnaissance for radioactive deposits in the vicinity of Teller and Cape Nome, Seward Peninsula, Alaska: U.S. Geological Survey Circular 244, 8 p.

  • Deposit

    Sainsbury, C.L., Hummel, C.L., and Hudson, Travis, 1972, Reconnaissance geologic map of the Nome quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-326, 28 p., 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.

  • Deposit

    Patrick, B.E. and McClelland, W.C., 1995, Late Proterozoic granitic magmatism on Seward Peninsula and a Barentian origin for Arctic Alaska-Chukotka: Geology, v. 23, p. 81-94.

Comments on the references

  • Primary Reference = White and others, 1953

General comments

Subject category Comment text
Deposit Model Name = Accessory minerals in Precambrian orthogneiss.
Deposit Other Comments = Cape Nome is an important locale for heavy riprap; riprap may be hauled on trucks or loaded on barges at the base of the cliff.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUL-00 Hawley, C.C. Hawley Resource Group
Reporter 10-JUL-00 Travis L. Hudson Hawley Resource Group