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Keku Islets Zinc-Silver Prospect

Prospect in Alaska, United States with commodities Zinc, Silver
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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. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002453
MRDS ID A013381
Record type Site
Current site name Keku Islets Zinc-Silver Prospect
Related records 10136955

Geographic coordinates

Geographic coordinates: -134.13636, 56.92862 (WGS84)
Location accuracy 500(meters)
Relative position 2.0 MI. SE OF TRIANGULATION STATION KEKU, ON W SHORE OF ISLAND

Site location context

Political divisions (FIPS codes)

Wade Hampton(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Port Alexander D-1(quadrangle 1:63,360 scale)

Port Alexander NE(quadrangle 1:100,000 scale)

Port Alexander(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS OF 84-837, LOC. 5; USGS MF-464, LOC. 16; USGS B 773, P. 137, FIG. 7 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991). LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Zinc Critical Primary
Silver Primary

Materials information

Materials Type of material
Sphalerite Ore
Marcasite Gangue
Pyrite Gangue

Analytical data

Result VEIN ASSAYED 37.4% ZN, 0.24 OZ/TON AG-USGS B 773, P. 139

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Hyd Group;Hyd Group;
    Rock description Hyd Group;Hyd Group;

Nearby scientific data

(1) MDip
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Conglomerate Strikes N 15 Degrees W

Ore body information

  • Length 137.16M
    Width 2.13M

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1923

Mining district

District name Kupreanof

Comments on the workings information

  • POSSIBLY DIAMOND DRILL HOLES IN AREA.

Comments on development

  • NUMEROUS CLAIMS STAKED IN AREA AS EARLY AS 1923, LARGE CLAIM BLOCKS STAKED IN 1970'S, MANY STILL ACTIVE AS OF 1982. SEVERAL DIAMOND DRILL HOLES DRILLED IN GENERAL AREA IN LATE 1970'S.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SPHALERITE IN TRANSVERSE FRACTURES IN BASALT DIKE IN GENTLY WARPED SANDSTONE AND CONGLOMERATE. VEINLETS ALSO ALONG CONTACT BETWEEN DIKE AND COUNTRY ROCK WHERE SPHALERITE FILLS MINUTE CRACKS IN PYRITE AND MARCASITE.
Deposit MUCH CURRENT INTEREST IN AREA, MAY CONTAIN EITHER VOLCANOGENIC MASSIVE SULFIDE OR MISSISSIPPI VALLEY-TYPE PB-ZN-BARITE DEPOSITS. ; INFO.SRC : 1 PUB LIT
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-JUL-87 Niles, L.P. (Huber, D.F.) U.S. Geological Survey
Editor 14-SEP-94 Waller, Nichelle (Mosier, Dan) U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.

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.