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York Creek Occurrence

Occurrence in Alaska, United States with commodities Copper, Cobalt, Nickel, Gold
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Geologic information

Identification information

Deposit ID 10001354
MRDS ID A012095
Record type Site
Current site name York Creek Occurrence
Related records 10136692

Geographic coordinates

Geographic coordinates: -135.92291, 58.64806 (WGS84)
Location accuracy 1000(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • MINERALIZATION AT 100 FT. AND BETWEEN 400 TO 700 FT ABOVE YORK CREEK ON THE N BANK; BEST LOCATION: USGS OFR 78-494, LOC. 91, PLATE III 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
Cobalt Secondary
Nickel Secondary
Gold Tertiary

Materials information

Materials Type of material
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue

Analytical data

Result SELECTED SAMPLE OF PYRITE BEARING QUARTZ VEIN: 1500 PPM CU, 150 PPM CO, 150 PPM NI, TRACE AU
Result 20 FT CHIP SAMPLE IN 1-FOOT INTERVALS ACROSS BRECCIA ZONE IN HORNFELS: 50 PPM CU, TRACE AU
Result AU BY FIRE ASSAY AA METHOD
Result USGS PP 632, P. 31, TABLE 9, LOC. 8

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels

Nearby scientific data

(1) -135.92291, 58.64806
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Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Juneau

Land status

Ownership category National Park

Comments on development

  • 4 CLAIMS STAKED BETWEEN 1899 AND 1904

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012095

Bibliographic references

  • Deposit

    USGS PP 632, P. 31, 34, LOC. 8

  • Deposit

    USGS OFR 78-494, P. C-365-6, LOC. 91

  • Deposit

    USGS OFR 85-717, P. 24

  • Other Database

    BAG-OFR-85-717-011

General comments

Subject category Comment text
Deposit 15 WIDELY SPACED PYRITE-RICH QUARTZ VEINS AND ALTERED ZONES CONTAIN PODS OF PYRITE; VEINS UP TO 0.5 FT THICK, ALTERED ZONES UP TO 50 FT WIDE IN HORNFELS; NEARBY FE STAINED ZONE 0.5 MI LONG IN SILICEOUS LIMESTONE CONTAINS 5-10% PYRRHOTITE
Deposit SEE ALSO: SANDY COVE, MILLER PEAK ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-85 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey