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Lenard Harbor

Occurrence in Alaska, United States with commodities Silver, Gold, Mercury
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Alteration
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10003312
MRDS ID A106055
Record type Site
Current site name Lenard Harbor

Geographic coordinates

Geographic coordinates: -162.3441, 55.10753 (WGS84)
Relative position Approximate location is near head of Lenard Harbor. May correspond in part to anomaly no. 58 of Christie (1974), described as northeast of Lenard Harbor in first north-south valley. See also CB006, Unnamed. Occurrence no. 6 of MacKevett and Holloway (1977, p. 9).

Site location context

Political divisions (FIPS codes)

Aleutians East(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cold Bay A-2(quadrangle 1:63,360 scale)

Cold Bay(quadrangle 1:100,000 scale)

Cold Bay(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Cold Bay(hydrologic unit)

Aleutian Islands(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

King Cove Corporation(ANCSA Village)

ANCSA Village NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Mercury Secondary

Alteration

  • (Local) Country rocks show weak propylitic alteration.

Mineral occurrence model information

Model code 104
USGS model code 25a
Deposit model name Hot-spring Au-Ag
Mark3 model number 45
Model code 151
USGS model code 25d
Deposit model name Epithermal vein, Sado
Mark3 model number 28
Model code 82
USGS model code 22
Deposit model name Epithermal veins

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -162.3441, 55.10753
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Christie (1974) reported two 3,000 ft (900 m) in diameter color anomalies resulting from irregularly distributed disseminated pyrite, and apparently not related to any intrusive bodies. Country rocks are pyroclastic volcanic rocks and minor andesite flows and diorite dikes. Pyroclastic rocks having high initial porosity are best pyritized. A few weakly altered diorite dikes having trace disseminated pyrite cut the lower elevation(?) anomaly.
  • Age = Pliocene or younger

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = Brief reconnaissance geologic mapping reported by Christie (1974, source of geologic description) who also collected a few silt samples. Only anomaly was silver at up to 1.6 ppm. Butherus and others (1979) did brief reconnaissance of area for gold around Lenard Harbor and found elevated mercury over a broad area.

Reference information

Bibliographic references

  • Deposit

    Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)

  • Deposit

    Butherus, D.L, Gressitt, E.E., Pray, J., Corner, N.G., Lindberg, P.H., and Fankhauser, R.E., 1979, Exploration and evaluation of the Aleut Native Corporation lands; Volume III: Resource Associates of Alaska, 69 p. 90 sheets, various sacales. (Report held by the Aleut Native Corporation, Anchorage, Alaska.)

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Comments on the references

  • Primary Reference = Christie, 1974

General comments

Subject category Comment text
Deposit Model Name = Hot-springs gold-silver, epithermal gold vein, polymetallic vein
Deposit Model Number = 25a, 25d, 22

Reporter information

Type Date Name Affiliation Comment
Reporter 09-MAY-1994 G.D. DuBois U.S. Geological Survey
Reporter 09-MAY-1994 F.H. Wilson U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.