1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Unnamed (south of valley of lower Butte Creek))

Occurrence in Alaska, United States with commodity 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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10307584
Record type Site
Current site name Unnamed (south of valley of lower Butte Creek))

Geographic coordinates

Geographic coordinates: -147.63276, 63.03862 (WGS84)
Relative position This occurrence is at an elevation of approximately 3,800 feet in the mountains south of the valley of lower Butte Creek. The map site is 0.75 miles north of VABM 5896 (Way), in the NW1/4 of sec. 6, T. 22 S., R. 1 E., of the Fairbanks Meridian. The location is accurate to within 1,000 feet. This is location 41 of Clark and Cobb (1972).

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Healy A-2(quadrangle 1:63,360 scale)

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

Healy(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

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Malachite Ore
Pyrite Ore

Alteration

  • (Local) Oxidation of copper minerals.

Mineral occurrence model information

Model code 90
USGS model code 24a
Deposit model name Massive sulfide, Cyprus
Mark3 model number 11

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Triassic
    Stratigraphic age (oldest) Late Pennsylvanian

Nearby scientific data

(1) -147.63276, 63.03862
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The area of this occurrence is underlain by Middle Triassic to Upper Pennsylvanian interbedded black argillite and volcanic sandstone. The upper part of sequence contains about 100 of radiolarian chert. The sequence is cut by numerous diabasic and gabbroic dikes (Wilson and others, 1998). The occurrence consists of pyrite and chalcopyrite disseminated in the bedded rocks, and of secondary malachite.
  • Age = the sulfide minerals probably are syngenetic with their Triassic-Upper Pennsylvanian host rocks.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Valdez Creek

Comments on the workings information

  • Workings / Exploration = Surface sampling only.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Saunders, 1961

General comments

Subject category Comment text
Deposit Model Name = Cyprus massive sulfide (Cox and Singer, 1986; model 24a)

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-00 N. Van Wyck Stevens Exploration Management Corporation

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.