|Quadrangle map, 1:250,000-scale||BG|
|Quadrangle map, 1:63,360-scale||D-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on the south end of the smaller of two lakes at the head of Martin Creek. It is at an elevation of about 4,850 feet in the SW 1/4 section 5, T 12 S, R 17 E, of the Copper River Meridian. It is locality 2 of Cobb (1972 [MF 373]; 1979 [OF 79-1246]). The larger of the two lakes at the head of Martin Creek is mislabeled 'Slender Lake' on the 1984 edition of the U.S. Geological Survey Bering Glacier D-4 quadrangle map. Slender Lake is the the headwaters of Bearhole Creek (Brabb and Miller, 1962).|
Geologic descriptionA quartz vein crosscutting metamorphosed flysch of the Cretaceous Valdez Group contains trace amounts of gold at this locality. A 500-gram sample of the vein yielded a flake of free gold (about 0.0001 gram) after being crushed and panned (Brabb and Miller, 1962).
|Geologic map unit||(-142.442088736387, 60.8554518184372)|
|Mineral deposit model||Low-sulfide Au-quartz vein (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Tertiary. The quartz vein crosscuts Valdez Group flysch that was metamorphosed in the Early Tertiary (Hudson and Plafker, 1982).|
|Workings or exploration||Reconnaissance surface observations have been completed at this locality (Brabb and Miller, 1962).|
|Indication of production||None|
Additional commentsThis occurrence is within the Wrangell-St. Elias National Park.
Brabb, E.E., and Miller, D.J., 1962, Reconnaissance traverse across the eastern Chugach Mountains, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-341, 1 sheet, scale 1:96,000.
Cobb, E.H., 1972, Metallic mineral resources map of the Bering Glacier quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-373, 1 sheet, scale 1:250,000.
Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bering Glacier, Icy Bay, Middleton Island, and Yakutat quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-1246, 41 p.
Hudson, T.L., and Plafker, George, 1982, Paleogene metamorphism of an accretionary flysch terrane, eastern Gulf of Alaska: Geological Society of America Bulletin, v. 93, p. 1280-1290.
|Reporters||Travis L. Hudson|
|Last report date||12/12/2001|