Klukwan Iron-Copper-Platinum Prospect

Prospect in Alaska, United States with commodities Iron, Copper, Titanium, Metal, Gold, Platinum, Palladium, Vanadium

Geologic information

Identification information

Deposit ID 10096787
MRDS ID A013094
Record type Site
Current site name Klukwan Iron-Copper-Platinum Prospect

Geographic coordinates

Geographic coordinates: -135.88323, 59.42253 (WGS84)
Elevation 411
Relative position 1.5 MI N OF KLUKWAN
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-424, LOCATION 16. LOCATION IS IN CANYON JUST ABOVE LARGE ALLUVIAL FAN, IN CENTER OF DEPOSIT AREA, WHICH EXTENDS 4 MI NW AND SE BY 1 MI WIDE ON SW SLOPE OF TAKSHANUK MTNS. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Iron Primary
Copper Primary
Titanium, Metal Primary
Gold Primary
Platinum Secondary
Palladium Secondary
Vanadium Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Hematite Ore
Ilmenite Ore
Palladium Ore
Platinum Ore
Actinolite Gangue
Bornite Gangue
Calcite Gangue
Chlorite Gangue
Epidote Gangue
Feldspar Gangue
Hornblende Gangue
Olivine Gangue
Pyrite Gangue

Alteration

  • (Local) Epidote Alteration Of Hornblende Diorite Near Contact With Pyroxenite

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Rock unit name Klukwan Ultramafic;
    Rock description Klukwan Ultramafic;

Nearby scientific data

(1) -135.88323, 59.42253

Comments on the geologic information

  • KLUKWAN ULTRAMAFIC PYROXENITE SURROUNDED BY HORNBLENDE DIORITE, WHICH IS BORDERED ON THE W BY CRET META-BASALT AND BY TERT QUARTZ DIORITE ON THE E.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Large
Significant No
Discovery year 1899

Mining district

District name Juneau/Haynes

Comments on the workings information

  • DIAMOND DRILLING IN 1952, SURFACE SAMPLING, PIT SAMPLING, AND CHURN DRILLING DONE BY 1961.

Comments on development

  • CONSIDERABLE EXPLORATION DONE ON BOTH LODE AND FAN DEPOSITS, A FEW TONS OF ORE SHIPPED FOR TESTING, BUT NO PRODUCTION. 26 PATENTED LODE CLAIMS ON LOWER ONE-THIRD OF KLUKWAN ULTRAMAFIC.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013094

Bibliographic references

  • Deposit

    USGS MF-424, LOC. 16 (1972)

  • Deposit

    USGS OF 78-316, P. 92, 93 (1978)

  • Deposit

    USBM OF 84-21 (1984)

  • Deposit

    USBM RI 4984, P. 1-4 (1953)

  • Deposit

    USGS OF 152, P. 10-24, 28-36 (1956)

  • Deposit

    USGS P 820, P. 541 (1973)

  • Deposit

    USGS P 832, P. 24-25 (1974)

  • Deposit

    USGS P 800-C, P. C159 (1972)

  • Other Database

    BAG-MF-424-16

General comments

Subject category Comment text
Deposit WORLD CLASS FE AND TI DEPOSIT. HAYNES HIGHWAY NEARBY PROVIDES GOOD TRANSPORTATION. SIGNIFICANT VALUES OF PLATINUM GROUP METALS (AU, PT, PD). AVERAGE PT VALUE OF 0.0027 OZ/TON GIVEN IN USGS P 820, P. 541 IS DISPUTED IN USBM 84-21, P. 14 WHICH GIVES AVERAGE OF 0.001-0.002 OZ/TON ; INFO.SRC : 1 PUB LIT
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.
Deposit DEPOSIT IS KLUKWAN ULTRAMAFIC PYROXENITE SURROUNDED BY HORNBLENDE DIORITE. THE PYROXENITE HAS DISSEMINATED MAGNETITE AND ILMENITE, AS WELL AS LENSES OF ALMOST PURE MAGNETITE-ILMENITE. THE MAGNETITE IS TITANIFEROUS. OTHER METALLIC GANGUE MINERALS INCLUDE HEMATITE, CHALCOPYRITE, PYRITE, LEUCOXENE, AND BORNITE. THE LARGEST CONCENTRATION OF TITANIFEROUS MAGNETITE OCCURS IN THE LOWER PORTIONS OF THE ULTRAMAFIC. GOLD, PLATINUM, AND PALLADIUM ARE MOST ABUNDANT IN AREAS WITH HIGH COPPER CONCENTRATION IN CENTRAL AND SOUTHERN PORTIONS OF DEPOSIT (FROM LOCATION POINT SOUTH). THE PYROXENITE BODY ENDS 0.5 MI SE OF LOCATION POINT, AND CONTACTS HORNBLENDE DIORITE WITH A SERIES OF CHALCOPYRITE, BORNITE, AND MALACHITE BEARING HYDROTHERMAL PINCH AND SWELL VEINS OCCUPYING N STRIKING STEEPLY DIPPING SHEAR ZONES. THESE VEINS HAVE HIGH CU, AU, PT, AND PD CONTENT. THE ULTRAMAFIC PYROXENITE BODY IS 4 MI LONG, AND UP TO 1.5 MI WIDE, TRENDING NW-SE. TOTAL SIZE OF MINERALIZED AREA IS AT LEAST 8 MI LONG
Deposit AND 1.5 MI WIDE, ALSO TRENDING NW-SE. TOTAL LODE DEPOSIT RESERVES ESTIMATED AT 3.5 BILLION TONS WITH AVERAGE SOLUBLE FE CONTENT OF 16.8%; IN ADDITION, ANOTHER 989,761,000 TONS AT 10.8% FE ARE IN THE ALLUVIAL FAN (USBM OF 84-21, P. 5). 500 MILLION TONS NEAR BASE OF PYROXENITE BODY HAVE OVER 20% FE. USGS P820, P. 541 CLAIMS 500 MILLION TONS OF TITANIFEROUS MAGNETITE WITH 0.0027 OZ/TON PLATINUM GROUP METALS, WHICH USBM OF 84-21, P. 14, DISPUTES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1987 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey
Editor 02-SEP-1994 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.