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  3. Alaska Resource Data File (ARDF)

Sugar Loaf Creek

Prospect, Inactive

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Commodities and mineralogy

Main commodities Au
Other commodities Th; U
Ore minerals gold; thorite
Gangue minerals orangite

Geographic location

Quadrangle map, 1:250,000-scale CA
Quadrangle map, 1:63,360-scale C-5
Latitude 65.74
Longitude -161.17
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is at an elevation of about 700 feet on Sugar Loaf Creek, approximately 1.5 miles above its mouth. The map site is in section 21, T. 4 N., R. 12 W., of the Kateel River Meridian. Cobb, 1972 (MF-389), location 24.

Geologic setting

Geologic description

Stream and bench gravels at this site have been prospected or mined for gold. Concentrate samples collected from the gravels contained thorium minerals (Gault and others, 1953).
Geologic map unit (-161.172678472816, 65.7393338847774)
Mineral deposit model Placer Au-PGE (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration In 1945 the U.S. Geological Survey sampled the stream sediments to evaluate their radioactive mineral content (Gault and others, 1953).
Indication of production Undetermined

Additional comments

Stream gradient approximately 200 feet per mile.

References

MRDS Number A015711

References

Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.
Gault, H.R., Killeen, P.L., West, W.S., and others, 1953, Reconnaissance for radioactive deposits in the northeastern part of the Seward Peninsula, Alaska, 1945-47 and 1951: U.S. Geological Survey Circular 250, 31 p.
Reporters Anita Williams (Anchorage, AK)
Last report date 1/12/2000