North Star Extension (ARDF #LG081) Au

North Star Extension

Mine, Inactive

Commodities and mineralogy

Main commodities	Au
Ore minerals	gold

Geographic location

Quadrangle map, 1:250,000-scale	LG
Quadrangle map, 1:63,360-scale	A-1
Latitude	65.034
Longitude	-147.478
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	Cobb (1972, MF-413), loc. 30; NE1/4NE1/4 sec. 2, T. 2 N., R. 1 E., of the Fairbanks Meridian. The mine is on the south side of the west fork of Skoogy Gulch; it is at an elevation of 1,780 feet, about 7.5 miles northeast of Fox along the Steese Highway. The North Star Extension claim covers part of the old Central Star shaft. Accuracy is within 1,000 feet.

Geologic setting

Geologic description Gold occurs in a 20-foot-wide quartz porphyry dike that strikes N 30 W and dips 45 SW. This dike was exposed by a tunnel driven 50 feet through schist. The dump material on the Central Star shaft is composed mainly of schist but contains some fragments of quartz porphyry (Hill, 1933, p. 118). In 1909, this shaft was 65 feet deep (Prindle, 1910).
Geologic map unit	(-147.480444182209, 65.0335759384237)
Mineral deposit model	Gold-bearing quartz porphyry dike.

Production and reserves

Workings or exploration	This property was developed by tunnels and shafts. In 1909 the Central Star shaft was 65 feet deep with 200 feet of tunnel (Prindle, 1910).
Indication of production	Yes; small
Production notes	In 1916, some ore was milled on the ground in a home-made 1-stamp mill driven by a 6-horsepower gasoline engine (Hill, 1933, p. 118).

References

MRDS Number	A015383
References Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate. Cobb, E.H., 1972, Metallic mineral resources map of the Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000. Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p. Hill, J.M., 1933, Lode deposits of the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 849-B, p. 29-163. Mertie, J.B., Jr., 1918, Lode mining in the Fairbanks district, in Brooks, A.H., and others, Mineral resources of Alaska, report on progress of investigations in 1916: U.S. Geological Survey Bulletin 662, p. 403-424. Prindle, L.M., 1910, Auriferous quartz veins in the Fairbanks district: U.S. Geological Survey Bulletin 442-F, p. 210-229. Smith, P.S., 1913, Lode mining near Fairbanks, in Prindle, L.M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 153-216. Smith, P.S., 1913, Lode mining near Fairbanks: U.S. Geological Survey Bulletin 542-F, p. 137-202.
Reporters	C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation)
Last report date	5/4/1999