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

Chichagof Extension Gold 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. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002360
MRDS ID A013278
Record type Site
Current site name Chichagof Extension Gold Prospect
Alternate or previous names Chichagof Extension No. 4 Claim
Related records 10283141

Geographic coordinates

Geographic coordinates: -136.0848, 57.65443 (WGS84)
Elevation 61
Relative position 0.75 MI. SE OF CHICHAGOF

Site location context

Political divisions (FIPS codes)

Sitka(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Sitka NW(quadrangle 1:100,000 scale)

Sitka W OE(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central 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)

West Chichagof-Yakobi Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS B 929, PLATE 1; USGS MF-467, LOC. 35 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

Comments on the commodity information

  • NO DATA ON METAL CONTENT, BUT AU IS LIKELY PRESENT.

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Sitka Graywacke
    Rock description Sitka Graywacke
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -136.0848, 57.65443
ListMap

Economic information

Ore body information

  • Strike VEIN NO. 1: N 15 DEGREES W; VEIN NO. 2: N 08 DEGREES W; VEIN NO. 3: N 29 DEGREES W
    Dip VEIN NO. 1: 80 DEGREES SW; VEIN NO. 2: 65 DEGREES W; VEIN NO. 3: 90 DEGREES
  • Strike VEIN NO. 1: N 15 DEGREES W; VEIN NO. 2: N 08 DEGREES W; VEIN NO. 3: N 29 DEGREES W
    Dip VEIN NO. 1: 80 DEGREES SW; VEIN NO. 2: 65 DEGREES W; VEIN NO. 3: 90 DEGREES
  • Strike VEIN NO. 1: N 15 DEGREES W; VEIN NO. 2: N 08 DEGREES W; VEIN NO. 3: N 29 DEGREES W
    Dip VEIN NO. 1: 80 DEGREES SW; VEIN NO. 2: 65 DEGREES W; VEIN NO. 3: 90 DEGREES

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Chichagof

Land status

Ownership category National Forest

Comments on the workings information

  • 3 TRENCHES UP TO 140 FT. LONG.

Comments on development

  • CLAIM OWNED BY CHICHAGOF EXTENSION MINING CO. AS OF 1938. NO PRODUCTION.

Reference information

Bibliographic references

  • Deposit

    USGS B 929, P. 128-129, PLATES 1, 3 (1941)

  • Deposit

    USGS OF 78-450, P. 27 (1978)

  • Deposit

    USGS MF-467, LOC. 35 (1972)

  • Other Database

    BAG-B-929-PL-1

General comments

Subject category Comment text
Deposit TRENCHES EXPOSE THREE QUARTZ VEINS IN GRAYWACKE. VEIN NO. 1 EXPOSED FOR 30 FT., IS 3 FT. WIDE FOR 8 FT.. VEIN NO. 2 EXPOSED FOR 20 FT., 6-14 IN. WIDE. VEIN NO. 3 EXPOSED FOR 140 FT., UP TO 1 FT. THICK.
Deposit NO SPECIFIC MENTION OF GOLD, BUT BECAUSE OF AMOUNT OF WORKINGS, IT WAS LIKELY PRESENT. AUTHORS OF USGS B 929 (REED AND COATS) COMMONLY OMIT MENTION OF GOLD CONTENT OF VEINS. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1987 Leonard, Kenneth R. (Huber, Donald F.) 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.