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  3. Mineral Resource Data System (MRDS)

Mirror Harbor

Prospect in Alaska, United States with commodities Cobalt, Copper, Nickel, PGE
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10258629
MRDS ID A013252
MAS/MILS ID 0021140068
Record type Site
Current site name Mirror Harbor
Alternate or previous names Juneau Sea Level Copper Mines, S. H. P. Vevelstad, Alaska Trust, Davison Bay, Ilene Claims, Alaska Nickel Mines, Fleming Island
Related records 10002338

Comments on the site names

  • OTHER NAMES: S.H.P. VEVELSTAD; JUNEAU SEA LEVEL CO. MINES; ALASKA NICKEL MINES; ALASKA TRUST; FLEMING ISLAND; DAVISON BAY; ILENE CLAIMS.

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -136.30894, 57.78501 (WGS84)
Elevation 20
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Sitka(Borough)

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)

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

Public Land Survey System information

Meridian Township Range Section Fraction State
Copper River 047 S 056 E 22 E2NENE Alaska

Commodities

Commodity Importance
Cobalt Critical Primary
Copper Primary
Nickel Critical Primary
PGE Critical Tertiary

Materials information

Materials Type of material
Amphibole Unknown
Chalcopyrite Unknown
Pentlandite Unknown
Plagioclase Unknown
Pyroxene Unknown
Pyrrhotite Unknown

Nearby scientific data

Ore Body (1) -136.30894, 57.78501
ListMap

Economic information

Ore body information

  • Strike N20W
    Dip 10W
    Thickness 24M
    Length 244M
    Width 52M
    Area 25HA
    Depth to top 10M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 IRREGULAR
    Primary mode of Origin MAGMATIC DIFFER
    Secondary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. UNKNOWN
    Strike And Dip N20W:10W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 1
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 25
    Date of Last Modification 880217

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1911
Milling method Flotation

Mining district

District name Chichagof District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Wilderness

Ownership information

  • Type Owner-Operator
    Owner Galactic Resources, Inc.
    Interest 100
    Home office New Jersey
    Year 1984

Comments on the ownership information

  • OWNER ADDRESS: INSPIRATION DEVELOPMENT CO. BOX 2247-R MORRISTOWN, NEW JERSEY 07960 TELE: (201) 540-9898 USGS CRIB W000378 USGS CRIB W000379

Reserves and resources

  • Type In-situ
    Estimate year 1984
    Total resources 7257mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 1.6 wt-pct Nickel Major 1984
    Copper Cu 1 wt-pct Copper Major 1984
  • Type In-situ
    Estimate year 1984
    Indicated 6625mt ore
    Demonstrated 6625mt ore
    Total resources 6625mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 1.57 wt-pct Nickel Major 1984
    Copper Cu 0.88 wt-pct Copper Major 1984

Comments on the reserve resource information

  • QUANTITY TAKEN FROM LETTER TO S. WIMPFEN FROM INSPIRATION. COBALT ASSAY GRADE TAKEN FROM BUNDTZEN, ET AL., P. 15.

Workings at the site

  • Type of workings Surface
    Area 7HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 50
    Avg. Overburden Thickness 10
    Primary Material Cover SAND, GRAVEL
    Secondary Material Cover M-HARD ROCKS
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 10
    Max. Pit Slope (degrees) 45
    Capacity 1000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 30
    Unit Production Cost 15.05
    Units of Production $/MT ORE
    Operating Days per Year 180
    Operating Shifts per Day 2
    Year of Information 1980

Reference information

Bibliographic references

  • Ownership

    ALASKA KARDEX 114-017

  • Reserve-Resource

    WAR MINERALS REPORT333 p. 8

  • Reserve-Resource

    SR38 p. 46

  • Deposit

    B642d p. 78

  • Deposit

    B662b pp. 25, 41

  • Deposit

    MR114-2

  • Deposit

    B666P p. 97

  • Deposit

    B692b pp. 22-23, 30

  • Deposit

    B692e pp. 125-133

  • Deposit

    B773d pp. 95-98, 110-111

  • Deposit

    B800 pp. 348-351

  • Deposit

    B936I pp. 221-243

  • Deposit

    MR114-5

  • Deposit

    MR191-5 p. 3

  • Deposit

    WAR MINERALS REPORT333

  • Deposit

    B947C pp. 56-63

  • Deposit

    RI4168

  • Deposit

    C252 p. 7

  • Deposit

    IC7844 p. 12

  • Deposit

    B1223 pp. 13, 38

  • Deposit

    ADGS AR 1966a p. 65

  • Deposit

    B1246 p. 144

  • Deposit

    MF467

  • Deposit

    P792 p. 91

  • Deposit

    LETTER WIMPFEN 7703

  • Deposit

    OF78-450 pp. 82-84

  • Deposit

    OF81-122 p. 100, No. 26

  • Deposit

    OF81-122

  • Deposit

    OF82-719 p. 10, No. 242

  • Deposit

    AMR 81-82 pp. 15, 39, 43

  • Deposit

    MTA 82 No. F-21

  • Deposit

    SR31 pp. 8, 15

  • Deposit

    SR33 p. 10

  • Deposit

    SR38 p. 46, No. 102

Comments on the references

  • SANFORD, 1942, 9P (UNPUB REPORT FOR PROJECT #506)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1995 Dwb U.S. Bureau of Mines

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.