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Alaska Resource Data File 

Any use of trade, product, or firm names is for descriptive purposes only and does not 

imply endorsement by the U.S. Government. 

OPEN-FILE REPORT 2006-1156 

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Distribution of mineral occurrences in the Point Lay

1:250,000-scale quadrangle, Alaska

 This and related reports are accessible through the USGS World Wide Web site 

http://ardf.wr.usgs.gov. Comments or information regarding corrections or missing 

data, or requests for digital retrievals should be directed to: Frederic Wilson, USGS, 4200 

University Dr., Anchorage, AK 99508-4667, e-mail fwilson@usgs.gov, telephone (907) 

786-7448. This compilation is authored by:

 Donald J. Grybeck

 Port Ludlow, WA

 

Point Lay quadrangle

 Descriptions of the mineral occurrences shown on the accompanying figure follow. 

See U.S. Geological Survey (1996) for a description of the information content of each field 

in the records. The data presented here are maintained as part of a statewide database 

on mines, prospects and mineral occurrences throughout Alaska.
Alaska Resource Data File 

Page 2 

Site name(s): Unnamed (near Kukpowruk River) 

Site type: Occurrence 

ARDF no.: PL001 

Latitude: 69.4167 Quadrangle: PL B-2 

Longitude: 162.6917 

Location description and accuracy:

 This occurrences is near the bank of the Kukpowruk River about 11 miles southwest of the center of Kuvirok Lake, near the northeast corner of Section 28, T. 1 N., R. 44 W., of the Umiat Meridian. The samples 

were collected along a two mile traverse centered at the indicated coordinates. 

Commodities: 

 Main: Th, U 

 Other: 

Ore minerals: 

Gangue minerals: 

Geologic description:

 During a study of the geology, petrology, and paleontology of the Cretaceous Nanushuk Group in northwestern Alaska, Huffman (1979) collected 34 samples of sandstone and shale in a stratigraphic section 

about 4,600 feet thick on the south limb of the Barbara syncline. The samples contained an average of 7.30 

parts per million (ppm) thorium and 1.58 ppm uranium; the maximum values were 16.14 ppm thorium and 

3.17 ppm uranium. 

Alteration:

 

Age of mineralization:

 Cretaceous or younger based on the age of the host rock. 

Deposit model:

Sandstone-hosted U. 

Deposit model number (After Cox and Singer, 1986 or Bliss, 1992):

 

Production Status: None 

Site Status: Undetermined 

Workings/exploration:

 Probably only sampling by government geologists in the course of stratigraphic and petrologic studies. 

Production notes:

 

Reserves:

 

Additional comments:

 

PL001 
Alaska Resource Data File 

Page 3 

References:

Huffman, 1979; Cobb and others, 1981. 

Primary reference: Huffman, 1979 

Reporter(s): D. J. Grybeck (U.S. Geological Survey) 

Last report date: 4/15/2006 

PL001 
Alaska Resource Data File 

Page 4 

 References 

Cobb, E.H., Mayfield, C.F., and, Brosge. W.P., 1981, Summaries of data on and list of references to metallic and 

selected nonmetallic mineral occurrences in Arctic, Baird Mts., Chandler Lake, De Long Mts., Demarcation Pt., Howard Pass, Micheguk Mtn., Mt. Michelson, Noatak, Point Lay, and Table Mtn. quadrangles 

in northern Alaska; supplement to Open-file report 75-628; Part A, Summaries of data to January 1, 

1981: U.S. Geological Survey Open-File Report 81-0767-A, 25 p. 

Huffman, A.C., 1979, Stratigraphy and petrography of a measured section on the south limb of Barbara syncline, 

in T.S. Ahlbrandt, ed., Preliminary geologic, petrologic, and paleontologic results of the study of the 

Nanushuk Group rocks, North Slope, Alaska: U.S. Geological Survey Circular C 794, p. 77-88. 

References