|Quadrangle map, 1:250,000-scale||MD|
|Quadrangle map, 1:63,360-scale||A-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Holmes Gulch placer mine is located at an elevation of 750 feet (228 m) in Section 25, T. 26 S., R. 21 E., of the Kateel River Meridian. Location is known to within 250 feet (76 m).|
Geologic descriptionThe Holmes Gulch placer deposit is in a steep first order stream that can be traced for about one mile (1.6 km). Gravels in Holmes Gulch were 11 ft (3.3 m) deep, and can be traced upstream 4000 ft (1,219 m) toward the Whalen shaft (MD071). Most of the mining took place at the intersection of Holmes Gulch and Hidden Creek. Boulders up to 4 ft in diameter encountered during mining. Age of mineralization is unknown, but is probably Quaternary, based on correlative geomorphological features with other dated placer deposits nearby (Bundtzen and Miller, 1997).
|Geologic map unit||(-154.783323302326, 63.2123913933734)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39c).|
|Mineral deposit model number||39c|
|Workings or exploration||Small-scale, surface-hydraulic sluicing predominated. There is no evidence that heavy machinery was employed in Holmes Gulch (Mertie, 1936). Most mining took place at the intersection of Holmes Gulch and Hidden Creek.|
|Indication of production||Yes; small|
|Production notes||The first recorded production from Holmes Gulch took place in 1919; mining continued intermittently until 1938. The production total for Holmes Gulch was 1,065 ounces (33 kg) gold and an unknown amount of silver.|
Additional commentsSee Hidden Creek (MD066).
Bundtzen, T.K., and Miller, M.L., 1997, Precious metals associated with Late Cretaceous-early Tertiary igneous rocks of southwestern Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 242-286.
Cobb, E.H., 1978, Summary of references to mineral occurrences in the Beaver, Bettles, and Medfra quadrangles: U.S. Geological Survey Open File Report 78-94, 54 pages.
Martin, G.C., 1922, Gold lodes in the upper Kuskokwim region: U.S. Geological Survey Bulletin 722-E, p. 149-161.
|Reporters||Bundtzen, T.K. (Pacific Rim Geological Consulting)|
|Last report date||6/7/1998|