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  3. Mineral Resource Data System (MRDS)

Unnamed Occurrence

Occurrence in Alaska, United States with commodities Gold, Silver, Copper, Tungsten
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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 10000976
MRDS ID A011648
Record type Site
Current site name Unnamed Occurrence

Geographic coordinates

Geographic coordinates: -148.19986, 61.58846 (WGS84)
Location accuracy 1000(meters)
Relative position S OF E BEND IN GLACIER FORK OF THE KNIK RIVER

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Anchorage C-4(quadrangle 1:63,360 scale)

Anchorage NE(quadrangle 1:100,000 scale)

Anchorage C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Matanuska(hydrologic unit)

Knik Arm(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • POSITION APPROXIMATED FROM USGS MF-409, LOC. 47 AND DESCRIPTION OF SAMPLE LOCATION M-13 IN ADGGS GR 25, P. 7. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Tungsten Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Scheelite Ore
Pyrrhotite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Valdez Group
    Rock description Valdez Group;Valdez Group;

Nearby scientific data

(1) -148.19986, 61.58846
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 Anchorage

Comments on development

  • GRAB SAMPLES TAKEN BY ADGGS IN 1966 GEOCHEMICAL INVESTIGATION

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit WEAKLY MINERALIZED ZONE UP TO 50 FT WIDE AROUND SMALL QUARTZ DIORITE STOCK CONTAINS ABUNDANT IRREGULAR QUARTZ VEINS WITH PYRRHOTITE AND MINOR CHALCOPYRITE; SHEAR ZONE IN INTRUSIVE ALSO MINERALIZED; SCHEELITE IN STREAM CONC.
Deposit DEPOSIT DOES NOT APPEAR RICH ENOUGH OR LARGE ENOUGH TO WARRANT FURTHER PROSPECTING, ADGGS GR 25, P. 15 ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-1994 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.
Editor 14-APR-1995 Waller, Nichelle (Mosier, Dan) U.S. Geological Survey PUT DIMENSION DATA INTO THE ORE BODY AND WORKINGS FIELDS FROM THE COMMENTS FIELD

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.