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

Eureka Prospect

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

Geologic information

Identification information

Deposit ID 10001359
MRDS ID A012102
Record type Site
Current site name Eureka Prospect

Geographic coordinates

Geographic coordinates: -135.08567, 58.86614 (WGS84)

Site location context

Political divisions (FIPS codes)

Juneau(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Juneau D-4(quadrangle 1:63,360 scale)

Juneau NW(quadrangle 1:100,000 scale)

Juneau(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lynn Canal(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass 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

  • LOCATION OBTAINED FROM UNPUBLISHED MINES AND PROSPECTS MAP; SEE USGS 85-717, NO. J 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

Analytical data

Result DATA COMBINED FROM 5 EXAMINATIONS SHOW AVERAGE VALUES FROM 0.195 TO 0.339 OZ AU FOR ASSAY BOUNDED AREAS OF 20 FT BY 400 FT TO 18 FT BY 400 FT, METZ AND WIEBMER, 1977 UNPUB. REPORT

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Jualin Diorite
    Rock description Jualin Diorite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -135.08567, 58.86614
ListMap

Economic information

Ore body information

  • Length 121.92M
    Width 12.19M
    Depth to bottom 106.68M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Juneau/Berner'S Bay

Land status

Ownership category National Forest

Comments on the reserve resource information

  • METZ AND WIEBMER, 1977 UNPUB. REPORT

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 106.68M

Comments on the workings information

  • PROSPECTED BY SURFACE CUTS AND DRIFT; INTERSECTED BY KENSINGTON ADIT 1350 FT FROM PORTAL, 350 FT BELOW SURFACE

Comments on development

  • INTERSECTED BY KENSINGTON ADIT IN 1904; MAY BE OF INTEREST AS PART OF KENSINGTON DEVELOPMENT IN THE FUTURE

Reference information

Bibliographic references

  • Deposit

    USGS BULL 287, P. 137

  • Deposit

    USGS BULL 284, P. 32-33

  • Deposit

    METZ, PAUL A. AND WIEBMER, JOHN D., 1977, M.I.R.L. SUMMARY FILE REPORT; EUREKA, KENSINGTON, COMET, JOHNSON AND JUALIN MINES, BERNER'S BAY, JUNEAU DISTRICT, AK: UNPUBLISHED REPORT TO USBM

  • Deposit

    USGS OFR 85-717, NO. J093

  • Other Database

    BAG-OFR-85-717-093

General comments

Subject category Comment text
Deposit SEE ALSO: KENSINGTON, JOHNSON, COMET, JUALIN ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit STOCKWORK IN SHEAR ZONE IN DIORITE, SIMILAR TO KENSINGTON DEPOSIT BUT SMALLER; OUTCROP LENGTH 400 FT AND WIDTH 30-40 FT AT A DEPTH OF 350 FT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1985 Leonard, Kenneth R. (Elliott, R. L.) 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.