Anderson Occurrence, Fairbanks District, Fairbanks North Star Borough, Alaska, USA

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Location: The Anderson occurrence is located near the southwest corner of sec. 34, T. 2 N., R. 1 W., Fairbanks Meridian, on the south side of Tungsten Gulch. This occurrence is approximately 1 mile southwest of Tungsten Hill and about 2.5 miles east of the town of Fox. This occurrence is included in locality 27 of Cobb (1972 [MF 410]) and is locality 129b of Chapman and Foster (1969).
Geology: The Anderson prospect is in mica schist of the Fairbanks Schist adjacent to a Cretaceous granite intrusion. Scheelite was found along the outer edge of a quartz vein in the schist; no scheelite was found within the vein or within the schist (Mertie, 1917, p. 424). The quartz vein is oriented N. 50 E., 55 NW.; the foliation of the the schist is N. 60 E., 20 W. (Mertie, 1917, p. 424). White and others (1952) reported sheared quartz veins that contained gold and several common sulfides in the in the granitic rock.
Workings: Surface exposure only.

Commodities (Major) - W; (Minor) - Au
Development Status: None
Deposit Model: W skarn deposit (Cox and Singer, 1986; model 14a)

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 Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 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 Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p. Mertie, J.B., Jr., 1918 (1917), Lode mining in the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 662-H, p. 403-424. Thorne, R.L., Muir, N.M., Erickson, A.W., Thomas, B. I., Hedie, H. E., and Wright, W. S., 1948, Tungsten deposits of Alaska: U.S. Bureau of Mines Report of Investigation 4174, 51 p. White, M. G., West, W. S., Tolbert, G. E., Nelson, A. E., and Houston, J. R., 1952, Preliminary summary of reconnaissance for uranium in Alaska: U.S. Geological Survey Circular 196, 17 p.

Mineral List

Gold

Scheelite

2 entries listed. 2 valid minerals.