Prospect in Alaska, United States with commodities Copper, Silver

Geologic information

Identification information

Deposit ID 10113036
MRDS ID A010416
MAS/MILS ID 0020950049
Record type Site
Current site name Jensen
Alternate or previous names Portsmouth, Scotia Bell
Related records 10093948

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -147.09035, 60.88098 (WGS84)
Elevation 185
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 011 S 011 W 25 NWSESE Alaska


Commodity Importance
Copper Primary
Silver Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Pyrite Unknown

Nearby scientific data

Main Entrance (1) -147.09035, 60.88098

Ore body information

  • Strike N15E
    Dip 67N
    Width 1.6M
    Length 182.9M
    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 N15E
    Date of Last Modification 881220

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 Jens Jensen
    Interest 100
    Home office Alaska
    Year 1916

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0020950049
USGS Mineral Resources Data System MRDS A010416 MAS references MRDS

Bibliographic references

  • Ownership

    ALASKA KARDEX 095-258

  • Deposit

    B662h p. 185

  • Deposit

    B692g pp. 146-147

  • Deposit

    B963B pp. 75-76, plate 6 No. 37

  • Deposit

    B1246 pp. 63-73.

  • Deposit

    B1139 363 pp.

  • Deposit


  • Deposit

    MIRL 27 p. 92.

  • Deposit

    B642g pp. 138-139.

  • Deposit

    MF880A # 189.

  • Deposit


  • Deposit


  • Deposit

    MLA5-84 218 pp., (Locality S-108).

Reporter information

Type Date Name Affiliation Comment
Reporter 20-DEC-88 AHC U.S. Bureau of Mines