|Quadrangle map, 1:250,000-scale||CV|
|Quadrangle map, 1:63,360-scale||B-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This site represents several occurrences in an approximately 15-sq.-mi area in the Dick Creek drainage. The roughly circular area is bounded on the south by Bering Lake and on the north, west, and east by the drainage divides of the tributaries of Dick Creek. The map site is about at the center of the area in the SW1/4, sec. 35, T. 17 S., R. 6 E., of the Copper River Meridian.|
Geologic descriptionThese occurrences consist of anomalous metal values in stream sediment from concretionary sandstone of the Tertiary Tokun Formation (Winkler and Plafker, 1993). Stream sediment concentrate samples contain >2% Zn (Goldfarb and others, 1992).
|Geologic map unit||(-144.31197942402, 60.3494594079378)|
|Mineral deposit model||Possibly sedimentary-exhalative Pb-Zn (Cox and Singer, 1986; model 31a)|
|Mineral deposit model number||31a ?|
|Age of mineralization||Tertiary, based on probable source of samples.|
|Workings or exploration||
None. Investigations of similar geochemical anomalies to the south on Kayak Island (Pickthorn and others, 1985) failed to find any outcrops containing mineral deposits (Goldfarb and others, 1992).Stream sediment concentrate samples contain >2% Zn (Goldfarb and others, 1992).
|Indication of production||None|
Additional commentsThis and other geologically similar areas in the Cordova quadrangle warrant further investigation (Nelson and others, 1994). Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.
Goldfarb, R.J., Case, J.E., Plafker, George, and Winkler, G.R., 1992, Maps showing areas of potential for mineral resources in the Cordova and northern Middleton Island 1-degree x 3-degree quadrangles, southern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2190, 1 sheet, scale 1:250,000.
Nelson, S.W., Miller, M.L., Goldfarb, R.J., Snee, L.W., Sherman, G.E., Roe, C.H., and Balen, M.D., 1994, Mineral resource assessment of the Chugach National Forest Special Study Area in northern Prince William Sound, Alaska: U.S. Geological Survey Open-File Report 94-272, 18 p.
Pickthorn, W.J., Goldfarb, R.J., O'Leary, R.M., Sutley, S.J., and Weaver, S.C., 1985, Kayak Island--Analysis of a geochemical anomaly, in Bartsch-Winkler, Susan, and Reed, K.M., eds., The U.S. Geological Survey in Alaska--Accomplishments during 1983: U.S. Geological Survey Circular 945, p. 82-83.
|Reporters||S.W. Nelson, Anchorage, AK|
|Last report date||6/10/2000|