Eureka Prospect

Occurrence in Alaska, United States with commodity Gold

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)
(click for info)

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  • LOCATION OBTAINED FROM UNPUBLISHED MINES AND PROSPECTS MAP; SEE USGS 85-717, NO.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

Ore body information

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

Economic information

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

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012102

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