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Apex-El Nido Mines

Past Producer in Alaska, United States with commodities Gold, Silver, Copper, Lead, Zinc, Tungsten, Arsenic
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10000501
MRDS ID A010690
Record type Site
Current site name Apex-El Nido Mines
Related records 10136615

Geographic coordinates

Geographic coordinates: -136.29372, 57.94971 (WGS84)

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sitka D-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)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Tertiary
Lead Tertiary
Zinc Critical Tertiary
Tungsten Critical Tertiary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Scheelite Ore
Sphalerite Ore
Tetrahedrite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Diorite Wall Rock Altered Near El Nido Vein

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -136.29372, 57.94971
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Vertical Fault Lies Between Apex And El Nido Veins

Ore body information

  • General form TABULAR
    Dip VARIABLE 80 DEGREES TO 30 DEGREES
    Thickness 1.52M
    Length 609.6M
    Depth to top 0M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1919
Year of first production 1920
Year of last production 1939

Mining district

District name Chichagof District

Land status

Ownership category National Forest

Comments on the production information

  • GOLD PRODUCTION, 1920-1939, BETWEEN 10,000 AND 50,000 OZ. NO DATA ON GRADE OR TONNAGE

Workings at the site

  • Type of workings Underground
    Length 1645.92M
    Overall depth 144.78M

Reference information

Bibliographic references

  • Deposit

    USGS OFR 78-450, P. 8-11

  • Deposit

    USGS B 1058-E, P. 143, 200-204

  • Deposit

    USGS B 963-A, P. 20-23

General comments

Subject category Comment text
Deposit FISSURE VEINS AND STOCKWORK IN DIORITE PLUTON & IN AMPHIBOLITE IN PLUTON. VEINS UP TO 4-5 FT THICK. APEX VEIN TRACED MORE THAN 2000 FT, EL NIDO VEIN MORE THAN 1000 FT. BOTH EXPOSED OVER 600 FT VERTICALLY.
Deposit Discovery Year: 1919-20

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1984 Elliott, R. L. U.S. Geological Survey
Editor 13-APR-1994 Mosier, Dan 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.