Albert Johnson Prospect

Occurrence in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10000850
MRDS ID A011503
Record type Site
Current site name Albert Johnson Prospect
Alternate or previous names Hubbard and Elliott Claims

Geographic coordinates

Geographic coordinates: -144.12115, 61.65798 (WGS84)
Location accuracy 500(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • BEST LOCATION: USGS BULL 745, PLATE III, LOC. 19. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Copper Ore
Calcite Gangue
Epidote Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Chitistone Limestone;Kotsina Conglomerate
    Rock description Chitistone Limestone;Kotsina Conglomerate
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
    Rock unit name Nikolai Greenstone
    Rock description Nikolai Greenstone

Nearby scientific data

(1) -144.12115, 61.65798

Geologic structures

Type Description Terms
Regional Reg.Struct: Near Axis Of Large Asymmetric Anticline; Axis Roughly Parallel To Elliott Cr.
Local Ore Bearing Fissures Strike N 20 To 30 W With Another Ore Bearing Set At Approximately 90 Degrees; Many Veins Truncated By Barren Fissures

Controls for ore emplacement

  • Fracture Control

Comments on the geologic information

  • GEOL.COM: AREA GEOLOGY CONSISTS OF TRIASSIC NIKOLAI GREENSTONE OVERLAIN BY CHITISTONE LIMESTONE; SECTION HAS BEEN FOLDED INTO A LARGE ASYMMETRIC ANTICLINE, CUT BY NUMEROUS FAULTS, THEN OVERLAIN BY JURASSIC KOTSINA CONGLOMERATE; ORE DEPOSITS ARE RESTRICTED TO MINERALIZED SHEAR ZONES IN GREENSTONE. GREENSTONE INTRUDED BY DIORITE PORPHYRY.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Workings at the site

  • Type of workings Underground
    Name of workings ALBERT JOHNSON AND ELIZABETH CLAIMS
    Length 609.6M

Comments on the workings information

  • AT LEAST TWO TUNNELS, ONE OF WHICH TOTALED 1076 FT IN LENGTH, NOT INCLUDING CROSSCUTS, IN AUGUST OF 1916; PRESENT CONDITION UNKNOWN

Comments on development

  • EXPL.COM: ELLIOTT CR. AREA FIRST STAKED IN 1899 BY. H. C. ELLIOTT AND CHAS. G. HUBBARD; NUMEROUS CLAIMS PATENTED BY 1907; PROSPECTING MAINLY BEFORE1916, ALTHOUGH APPARENT POST 1950 ACTIVITY HAS BEEN REPORTED

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011503

Bibliographic references

  • Deposit

    USGS BULL 374, P. 70

  • Deposit

    USGS BULL 745, P. 118-119

  • Deposit

    USGS BULL 622, P. 112-113

  • Deposit

    USGS BULL 662, P. 156-157

  • Deposit

    USGS MF-438, LOC. 64

  • Deposit

    USGS OFR 80-892B, LOC. 54

  • Other Database

    BAG-OFR-80-892B-54

General comments

Subject category Comment text
Deposit BORNITE, CHALCOPYRITE AND NATIVE CU AS VEINS AND REPLACEMENT DEPOSITS IN FRACTURED GREENSTONE
Deposit SEE ALSO: GOODYEAR PROSPECT; COPPER KING PROSPECT; MOST DEVELOPMENTIN ELLIOTT CR. AREA WAS DONE ON GOODYEAR, ALBERT JOHNSON AND ELIZABETH CLAIMS; TOTAL OF 1500 TO 2000 FT OF UNDERGROUND WORKINGS AND SEVERAL OPEN CUTS IN ELLIOTT CR. BASIN; NO RECORD OF ANY PRODUCTION ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-85 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey PARSED DATA INTO WORKINGS AND ORE BODY MULTIVALUED FIELDS
Editor 14-APR-94 Mosier, Dan U.S. Geological Survey
Editor 30-MAY-95 Waller, Nichelle (Mosier, Dan) U.S. Geological Survey