Sunset Cove Prospect

Occurrence in Alaska, United States with commodities Silver, Gold, Antimony, Lead, Zinc

Geologic information

Identification information

Deposit ID 10001288
MRDS ID A012021
Record type Site
Current site name Sunset Cove Prospect
Alternate or previous names Silver Falls, Kathleen, Gold Fork, Clark

Geographic coordinates

Geographic coordinates: -134.26422, 58.32808 (WGS84)
Location accuracy 500(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • BEST LOCATION: USGS OFR 85-717, NO. J207 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Silver Primary
Gold Primary
Antimony Secondary
Lead Tertiary
Zinc Tertiary

Comments on the commodity information

  • AU: AG RATIO OF ABOUT 1:10 OR MORE IN NUMEROUS SAMPLES; USGS OFR 85-717, P. 223

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Stibnite Ore

Analytical data

Result 1983 SAMPLES: .1-1.0% AS, 15-100 PPM AG, UP TO 7 PPM AU IN VEINED SHEAR ZONES
Result HIGH GRADE VEINS ASSAYED .5-1.0% AS, 15-500 PPM AG
Result ONE SAMPLE CONTAINED 70 PPM AU
Result USGS OFR 85-717, P. 223

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Clark Peck Schist;;
    Rock description Clark Peck Schist;;
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Clark Peck Schist;
    Rock description Clark Peck Schist;

Nearby scientific data

(1) -134.26422, 58.32808

Ore body information

  • Length 91.44M

Comments on the geologic information

  • SCHISTOSE COUNTRY ROCK IS INTRUDED BY PEGMATITIC INJECTION GNEISS; LARGER VEINS END ON MINOR FAULTS. CLARK PECK SCHIST; HETEROGENEOUS UNIT DOMINATED BY QUARTZ MICASCHIST; NUMEROUS TYPES OF SCHIST AND META-SEDIMENTS. THIN QUARTZ DIORITE AND BASALT DIKES.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1911

Mining district

District name Juneau

Land status

Ownership category National Forest

Comments on the workings information

  • EXPLORED BY OPEN CUTS, 2 ADITS AND 150 FT CROSSCUT; REPORTED OPEN IN 1985

Comments on development

  • 6 UNPATENTED LODE CLAIMS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012021

Bibliographic references

  • Deposit

    USGS BULL 783, P. 50-52

  • Deposit

    USGS BULL 800, P. 331

  • Deposit

    USBM IC 7844, P. 9

  • Deposit

    USGS BULL 1246, P. 155

  • Deposit

    USGS OFR 60, P. 69-74

  • Deposit

    USGS OFR 85-717, P. 223

  • Other Database

    BAG-OFR-85-717-207

General comments

Subject category Comment text
Deposit SEVERAL QUARTZ VEINS 1-3 FT WIDE AND QUARTZ STRINGERS IN BRECCIATED ZONES IN SCHIST; SULFIDES DISSEMINATED IN BRECCIA AND AS SECONDARY VEIN REPLACEMENTS; PYRITE ARSENOPYRITE AND STIBNITE ARE DOMINANT SULFIDES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-85 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-94 Mosier, Dan U.S. Geological Survey