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Kathleen-Margaret Prospect

Occurrence in Alaska, United States with commodities Copper, Silver, Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10001126
MRDS ID A011814
Record type Site
Current site name Kathleen-Margaret Prospect
Alternate or previous names K-M Prospect
Related records 10282393

Geographic coordinates

Geographic coordinates: -146.56108, 63.28104 (WGS84)

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Hayes B-6(quadrangle 1:63,360 scale)

Mount Hayes SW(quadrangle 1:100,000 scale)

Mount Hayes(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Susitna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • BEST LOCATION: ADGGS GR 20, FIGURE 3, LOC. 8 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991). ; INFO FROM LAND.ST :49?

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary

Materials information

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

Analytical data

Result MAIN 10.5 FT VEIN CONSISTS OF BAND OF BARREN QUARTZ 1.5 TO 2 FT WIDE, ADJACENT HIGH-GRADE BAND 1.5 TO 2 FT WIDE ASSAYING 30 TO 45% CU, AND 6.5 TO 7.5 FT BAND ASSAYING 3.5 TO 12.5% CU
Result 7 FT CHANNEL SAMPLE CONTAINED 0.18 OZ/TON AU AND 1.20 OZ/TON AG
Result RICHEST CU SAMPLE CONTAINED 2.55 OZ/TON AG
Result DATA FROM USGS CIRC 332, P. 5
Result ORE IS MORE COMMONLY 1 TO 5% CU, ACCORDING TO MACKEVETT, 1964, USGS PP 501-C, P. C120
Result USBM BENEFICIATION TEST INDICATED THAT 1.2% CU ORE COULD BE CONCENTRATED TO CONCENTRATE ASSAYING 36.7% CU WITH 95% RECOVERY, USBM RI5245, P.9

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
    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 Amphitheatre Basalt; Greenstone Cut By Maficintrusives And Tert Porphyry Dikes
    Rock description Amphitheatre Basalt; Greenstone Cut By Maficintrusives And Tert Porphyry Dikes

Nearby scientific data

(1) -146.56108, 63.28104
ListMap

Economic information

Ore body information

  • Strike N 3 TO 5 E
    Dip 70 TO 90 W

Controls for ore emplacement

  • Main Quartz Vein Is Cut By Fault Zone Which Strikes Eastward And Dips 65 S To Vertical, And Is Partly Bounded By Ne Striking Vertical Faults Subsidiary To E Striking Fault; Cu Valves Decrease Away From Fault-Vein Intersection

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Valdez Creek

Workings at the site

  • Type of workings Surface/Underground
    Length 243.84M

Comments on the workings information

  • EXPLORED BY ABOUT 800 FT. OF UNDERGROUND WORKINGS, 2000 FT OF EXPLORATORY DRILL HOLES AND SURFACE TRENCHES

Comments on development

  • KNOWN SINCE ABOUT 1918; EARLY HISTORY OBSCURE; EXPLORED BETWEEN 1953 AND 1959, PARTLY UNDER SPONSORSHIP OF DMEA, BY ADIT AND UNDERGROUND CONNECTIONS, DRILL HOLES AND SURFACE TRENCHES

Reference information

Bibliographic references

  • Deposit

    USGS CIRC 332

  • Deposit

    USBM RI 5245, P. 1,9

  • Deposit

    ALASKA DIVISION OF MINES AND MINERALS, REPORT FOR THE YEAR 1961, P. 39

  • Deposit

    ADGGS GR 4, P. 4-5, 8-9, 13

  • Deposit

    USGS PP 501-C, P. C117-C120

  • Deposit

    ADGGS GR 20, P. 21, LOC. 8

General comments

Subject category Comment text
Deposit SEVERAL BORNITE AND CHALCOPYRITE BEARING QUARTZ VEINS; LARGEST VEIN: 10.5 FT WIDE, ZONE OF RICHEST ORE 60 FT LONG, 5 FT WIDE AND 100 FT HIGH; OTHER VEINS IN AREA SMALLER, LEANER AND CANNOT BE TRACED MORE THAN 100 FT
Deposit WELL EXPLORED PROSPECT; 2 TONS OF ORE ESTIMATED AT 1-2 % CU STOCKPILED AT PROSPECT IN 1960 ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey

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.