Unnamed

Occurrence in Alaska, United States with commodities Copper, Silver, Lead, Molybdenum, Zinc

Geologic information

Identification information

Deposit ID 10003565
MRDS ID A106323
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -171.51319, 63.42912 (WGS84)
Relative position This site is on a low ridge, at elevations of 600 to 700 feet, between two headwater tributaries of the Kookooliktook River on the west side of Poovookpuk Mountain and about 1 1/3 mile southeast of the Poovookpuk Mountain prospect (SL008). It was not included by Cobb (1972; 1980).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Lead Secondary
Molybdenum Secondary
Zinc Secondary

Materials information

Materials Type of material
Pyrite Gangue

Alteration

  • (Local) Pyrite-enrichment of the Cretaceous volcanic rocks is noted but other aspects of alteration here are not described.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -171.51319, 63.42912

Comments on the geologic information

  • Geologic Description = An area of pyrite enrichment in Cretaceous volcanic rocks, over a mile across, was identified by Patton and Csejtey (1971, Figure 4). Although samples and descriptions of this area are not available, stream sediments from the drainage on its north side contain anomalous levels of several metals. These stream sediment samples, collected over a distance of 2 1/2 miles downstream from the pyrite-enriched area, contain up to 700 ppm copper, 70 ppm molybdenum, 500 ppm lead, 1 ppm silver, and 700 ppm zinc (Patton and Csejtey, 1972). These values suggest a polymetallic character to mineralization in the headwaters of this drainage.
  • Age = Proximity of this mineralized area to the Poovookpuk Mountain prospect , although apparently more polymetallic in character, suggests that it is probably mid-Cretaceous, the age of K/Ar-dated intrusive and volcanic rocks on western St. Lawrence Island (Patton and Csejtey, 1980).

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Bering Sea

Comments on the workings information

  • Workings / Exploration = Stream sediments from the drainage on the north side of the site contain anomalous levels of several metals. These stream sediment samples, collected over a distance of 2 1/2 miles downstream from the pyrite-enriched area, contain up to 700 ppm copper, 70 ppm molybdenum, 500 ppm lead, 1 ppm silver, and 700 ppm zinc (Patton and Csejtey, 1972).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106323
USGS Alaska Resource Data File ARDF SL010

Bibliographic references

  • Deposit

    Patton, W.W., Jr., and Csejtey, Bela, Jr., 1971, Preliminary geologic investigations of western St. Lawrence Island, Alaska: U.S. Geological Survey Professional Paper 684-C, p. C1-C15.

  • Deposit

    Patton, W.W., Jr., and Csejtey, Bela, Jr., 1972, Analyses of stream sediment and rock samples from St. Lawrence Island, Alaska, 1966-1971: U.S. Geological Survey Open-File Report 72-293, 78 p.

  • Deposit

    Patton, W.W., Jr., and Csejtey, Bela, Jr., 1980, Geologic map of St. Lawrence Island, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-1203, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1980, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and west-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Saint Lawrence quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-465, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Patton and Csejtey, 1971 (PP 684-C)

General comments

Subject category Comment text
Deposit Model Name = Polymetallic sulfide mineralization in altered volcanic rocks. Deposit model 22c (?); polymetallic veins

Reporter information

Type Date Name Affiliation Comment
Reporter 10-SEP-1998 Travis L. Hudson Applied Geology