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  3. Mineral Resource Data System (MRDS)

Emerick Prospect

Prospect in Alaska, United States with commodities Nickel, Copper
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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. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10001107
MRDS ID A011793
Record type Site
Current site name Emerick Prospect
Related records 10112687

Geographic coordinates

Geographic coordinates: -145.69856, 63.3566 (WGS84)

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Hayes B-4(quadrangle 1:63,360 scale)

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

Mount Hayes C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • BEST LOCATION: ADGGS GR 14, FIGURE 4, LOC. 1 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
Nickel Critical Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pentlandite Ore

Analytical data

Result UNWEIGHTED AVERAGES: 1.14% CU, 3.99% NI
Result MAXIMUM ASSAY VALVES: 2.68% CU, 14.02% NI
Result NO AU OR AG
Result ADGGS GR 14, P. 46

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite

Nearby scientific data

(1) -145.69856, 63.3566
ListMap

Economic information

Comments on the geologic information

  • DISSEMINATED SULPHIDES WERE PROBABLY FORMED FROM IMMISCIBLE LIQUID DROPLETS IN LATE FRACTION OF PERIDOTITIC MAGMA FROM WHICH THE GABBRO DIKE WAS CRYSTALLIZED; SULPHIDE LENSES COULD HAVE BEEN FORMED BY MIGRATION OF LATE STAGE IMMISCIBLE FLUID INTO FRACTURES AND SHEARS

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Delta River

Comments on development

  • DISCOVERED IN EARLY 1950'S TRENCHING, MAPPING AND SAMPLING BY NEWMONT MINING CO. IN 1962; BENEFICIATION STUDIES UNSUCCESSFUL; COVERED BY ACTIVE UNPATENTED CLAIMS IN 1974

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SEE ALSO: BEE MINING CO. PROSPECT ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit SMALL LENSES OF PYRRHOTITE, PENTLANDITE, CHALCOPYRITE AND PYRITE IN SERPENTINIZED PERIDOTITE; LENSES 10-20 FT LONG, MAXIMUM 10 FT WIDE; ALSO SULFIDES DISSEMINATED IN GABBRO DIKE CUTTING PERIDOTITE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-1994 Mosier, Dan 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.