1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Lake Fork Area Gold Prospect

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

Geologic information

Identification information

Deposit ID 10002154
MRDS ID A013047
Record type Site
Current site name Lake Fork Area Gold Prospect

Geographic coordinates

Geographic coordinates: -154.48453, 59.24523 (WGS84)

Site location context

Political divisions (FIPS codes)

Kenai Peninsula(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Iliamna A-4(quadrangle 1:63,360 scale)

Iliamna SE(quadrangle 1:100,000 scale)

Iliamna C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tuxedni-Kamishak Bays(hydrologic unit)

Western Cook Inlet(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-364, LOCATION 17; USGS OFR 897, TABLE 3, LOCALITY 17, SAMPLE 45: EXACT LOCATION GIVEN. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary

Comments on the commodity information

  • SEMI-QUANTITATIVE SPECTROGRAPHIC ANALYSIS OF SAMPLE FROM FISSURE; TABLE 2, SAMPLE 45, OFR 897

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Malachite Ore
Silver Ore
Biotite Gangue
Chlorite Gangue
Iron Gangue
Pyrite Gangue
Quartz Gangue

Analytical data

Result BEDROCK SAMPLE-AU: 11.9 PPM, AG: 20 PPM, CU: 5000 PPM +
Result SAMPLE 45, LOCALITY 17, USGS OFR 897

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -154.48453, 59.24523
ListMap

Economic information

Ore body information

  • Length 45.72M
    Width 45.72M

Comments on the geologic information

  • 100-150 FT WIDE BRECCIA ZONE IN QUARTZ DIORITE INTRUDING HORNBLENDE GABBRO

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Redoubt District

Land status

Ownership category State

Comments on the workings information

  • 1 PARTIALLY CAVED ADIT DRIVEN 15 FT INTO BRECCIA

Comments on development

  • BEDROCK AND STREAM SEDIMENT SAMPLES TAKEN 1967, 1 15 FT ADIT DRIVEN IN 1964.

Reference information

Bibliographic references

  • Deposit

    USGS MF-364, LOCATION 17 (1972)

  • Deposit

    USGS OFR 81-1343A, P. A6 (1981)

  • Deposit

    USGS OFR 897, P. 13, TABLE 2, 3 (1967)

  • Deposit

    USGS B 1368-B, P. B78, PLATE 1 (1980)

  • Other Database

    BAG-MF-364-17

General comments

Subject category Comment text
Deposit SELECTED SULFIDE-RICH SPECIMENS FROM A SHEAR ZONE IN QUARTZ DIORITE YIELD GOLD AND SILVER VALUES IN EXCESS OF 1/2 OZ. PER TON ; INFO.SRC : 1 PUB LIT
Deposit 6 IN. TO 2 FT. WIDE MALACHITE-STAINED FISSURE IN QUARTZ DIORITE CONTAINS MANY SULFIDE-RICH VEINS.
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1987 Leonard, Kenneth R. (Huber, Donald F.) 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.