Head of the Bay

Prospect in Alaska, United States with commodities Copper, Silver, Zinc

Geologic information

Identification information

Deposit ID 10161018
MRDS ID A010427
MAS/MILS ID 0020960040
Record type Site
Current site name Head of the Bay
Alternate or previous names Head of Bay, Cordova Tacoma Copper Co.
Related records 10000361

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -145.5533, 60.6629 (WGS84)
Elevation 442
Location accuracy 100(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Copper River 014 S 002 W 10 SWSESE Alaska


Commodity Importance
Copper Primary
Silver Tertiary
Zinc Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Pyrrhotite Unknown

Nearby scientific data

Main Entrance (1) -145.5533, 60.6629

Ore body information

  • Strike N35E
    Dip 45N
    Width 0.6M
    Length 3M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N35E
    Date of Last Modification 881017

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Cordova-Tacoma Copper Co.
    Interest 100
    Home office Alaska
    Year 1909

Reserves and resources

  • Type In-situ
    Estimate year 1984
    Inferred 881mt ore
    Total resources 881mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.6 wt-pct Copper Major 1984

Comments on the workings information

  • Workings consist of a 26.5 m. long adit with a winze at its face.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0020960040
USGS Mineral Resources Data System MRDS A010427 MAS references MRDS

Bibliographic references

  • Ownership

    ALASKA KARDEX 096-045

  • Deposit

    B442h p. 165

  • Deposit

    B443 pp. 70

  • Deposit

    I453 Locality 17

  • Deposit


  • Deposit

    OF79-973 75 pp.

  • Deposit

    B1139 363 pp.

  • Deposit

    MIRL 27 p. 55

  • Deposit


  • Deposit

    MLA5-84 218 pp., (Locality C-21)

  • Deposit

    BMOF83-81 229 pp.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-OCT-1988 Wlg U.S. Bureau of Mines