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  3. Mineral Resource Data System (MRDS)

Pass Lake

Occurrence in Alaska, United States with commodities Copper, Molybdenum, Zinc
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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 10002178
MRDS ID A013075
Record type Site
Current site name Pass Lake

Geographic coordinates

Geographic coordinates: -153.23607, 61.39919 (WGS84)
Relative position This occurrence is at the toe of a glacier in small south tributary valley to the upper Chilligan River. It is at an elevation of about 4,800 feet, 0.4 mile southwest of peak 6017. The map site is in the SW/4 section 9, T 15 N, R22 W, of the Seward Meridian. It is locality 16 of MacKevett and Holloway (1977), locality 40 of Gamble and others (1989), and it is included under the name Pass Lake by Cobb and Reed (1981). It is approximately located, perhaps within one-half mile.

Site location context

Political divisions (FIPS codes)

Kenai Peninsula(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lime Hills B-1(quadrangle 1:63,360 scale)

Lime Hills SE(quadrangle 1:100,000 scale)

Lime Hills(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Redoubt-Trading Bays(hydrologic unit)

Western Cook Inlet(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Lake Clark 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

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Molybdenite Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore

Alteration

  • (Local) Quartz veining(?).

Mineral occurrence model information

Model code 79
USGS model code 21a
Deposit model name Porphyry Cu-Mo
Mark3 model number 2

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Styx River Batholith
    Rock description Styx River Batholith
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -153.23607, 61.39919
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = This occurrence represents an approximately 5-square-mile area of local base metal geochemical anomalies (Resource Associates of Alaska, 1976). At the map site, Tertiary biotite granite float containing disseminated molybdenite assayed 960 ppm molybdenum. Tertiary granite throughout the area locally contains molybdenite, pyrite, and pyrrhotite, and, less commonly, chalcopyrite and sphalerite. At least some of the mineralization is probably in quartz veins.
  • Age = Tertiary. Sulfide mineralization is in Tertiary granitic rocks.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Redoubt

Comments on the workings information

  • Workings / Exploration = Reconnaissance surface observation and sampling has been completed in this area.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Resource Associates of Alaska

General comments

Subject category Comment text
Deposit Model Name = Porphyry Cu-Mo (Cox and Singer, 1986, model 21a)
Deposit Other Comments = This occurrence is within Lake Clark National Park.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-2001 Travis L. Hudson Applied Geology
Reporter 10-JUN-2001 Travis L. Hudson Applied Geology

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.