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York Creek Occurrence

Occurrence in Alaska, United States with commodities Copper, Cobalt, Nickel, 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. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

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)

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Juneau C-6(quadrangle 1:63,360 scale)

Juneau NW(quadrangle 1:100,000 scale)

Juneau(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Glacier Bay(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Glacier Bay National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

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 Critical Secondary
Nickel Critical 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
ListMap

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

Bibliographic references

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

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.