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Gilpatrick

Occurrence in Alaska, United States with commodities Gold, Silver, Copper, Zinc, Lead
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10000334
MRDS ID A010390
Record type Site
Current site name Gilpatrick
Related records 10136938

Geographic coordinates

Geographic coordinates: -149.57037, 60.61647 (WGS84)

Site location context

Political divisions (FIPS codes)

Kenai Peninsula(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Seward C-7(quadrangle 1:63,360 scale)

Seward NW(quadrangle 1:100,000 scale)

Seward(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Kenai Peninsula(hydrologic unit)

Kenai Peninsula(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chugach National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • DEPOSIT NUMBER IS THE MAP LOCATION NUMBER FROM MF-880A. 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 Secondary
Copper Tertiary
Zinc Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Silver Ore
Sphalerite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Dike Has Extensive Chlorite-Serkite Alteration

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Valdez Group
    Rock description Valdez Group;Valdez Group;

Nearby scientific data

(1) -149.57037, 60.61647
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Several Faults Which Cut Ore Body Strike N60e And Dip 75-90nw. Cleavage In Slate Strikes N15e And Dips 65-85e

Ore body information

  • Thickness 3.05M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Hope District

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Surface/Underground
    Length 91.44M

Comments on the workings information

  • 3 LEVELS OF TUNNELS ARE PRESENT. THE LOWER TUNNEL IS 265 FEET LONG; THE MIDDLE TUNNEL HAS CAVED IN; THE UPPER TUNNEL IS 50 FEET LONG. ALSO OPEN TRENCHES.

Comments on development

  • LATER REFERENCES (OF 80-621, ETC.) INDICATE PRODUCTION, BUT ORIGINAL PUBLICATIONS SUGGEST THAT THIS WAS NOT THE CASE

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MINERALIZED FELSIC DIKE CONTAINS QUARTZ FILLED FRACTURES CARRIES NATIVE METALS AND SULFIDES. PARALLEL TO DIKE ARE QUARTZ VEINS 2 TO 12 INCHES IN WIDTH AT A DISTANCE OF 2 TO 10 FEET FROM THE DIKE. THE VEINS ARE MINERALIZED IN A MANNER SIMILAR TO THE DIKE. THE ORE BODIES ARE OFFSET BY SEVERAL DEXTRAL FAULTS. THE PRESENCE OF GOUGE ON ONE WALL OF THE DIKE INDICATES POST-MINERALIZATION MOVEMENT ALONG ANOTHER FAULT PARALLEL TO THE DIKE. DIKE CONTINUES FOR SEVERAL MILES (SEE FRESNO CREEK), BUT DEVELOPMENT ON THIS SITE IS RESTRICTED TO A FEW THOUSAND FEET OF ITS LENGHT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1984 Hirschmann, M. M. (Elliott, R. L.) U.S. Geological Survey
Editor 13-APR-1994 Mosier, Dan 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.