|Quadrangle map, 1:250,000-scale||MF|
|Quadrangle map, 1:63,360-scale||C-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||
This deposit (placer) is in a wide valley on a south-flowing tributary of the Dundas River. It is about 1.25 miles south of Lake Seclusion, locally called Dundas Lake . (Claim location notices described it as located 2 miles south of Dundas Lake in the Dundas River.) At least part of the placer is within the NE 1/4 SW 1/4, section 5, T. 39 S., R. 55 E., of the Copper River Meridian. The location is accurate within a few tenths of a mile.The deposit could be the Dundas River placer, which was reported by MacKevett and others (1971, p. 67) and Cobb (1972, location 69) to be in the Mt. Fairweather B-2 quadrangle.
The Valley of Tears placer is about 2 miles south of the contact between a large granitic body of Cretaceous age and carbonate-rich strata of Paleozoic age (Brew and others, 1978). The deposit appears to be a river bar placer that was formed by reworking of slightly auriferous outwash and alluvium derived from the granitic contact region exposed at Lake Seclusion.The Bureau of Mines collected nine 3- to 7.5-pound samples at the site (Kimball and others, 1978, p. C363-4). The samples were panned at Juneau; all panned concentrates contained gold visible under a binocular microscope. Fire assays of the samples indicated a very small total gold content (about 1 cent per cubic yard, with gold valued at about $300 per ounce). Mining equipment was found at the site. Probably miners found and mined small, rich concentrations of lag-concentrated sand and gravel in river bar deposits.
|Geologic map unit||(-136.369827057537, 58.5156351317207)|
|Mineral deposit model||River bar-type placer formed by reworking of slightly auriferous Holocene outwash and alluvium.|
|Age of mineralization||Holocene.|
|Workings or exploration||Surface prospects were found near a cabin; there were visible claim lines. All samples collected by Kimball and others (1978) of alluvial material contained gold that could be concentrated by panning. The placer may be the same deposit reported by MacKevett and others (1971, p. 67) as the Dundas River placer. The placer deposit was covered with nine claims owned by the Jimmie Martin estate. Tentatively the Valley of Tears placer is regarded as the same deposit that was given an uncertain location on the 'Dundas River' in Mt. Fairweather B-2 quadrangle by MacKevett and others (1971) and by Cobb (1972).|
|Indication of production||None|
|Reserve estimates||Very low-grade resource; mineable in local concentrations.|
|Production notes||Small, but some production probable.|
Additional commentsThe site is in Glacier Bay National Park and Preserve.
Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p., 7 sheets.
Cobb, E.H., 1972, Metallic mineral resources map of the Mount Fairweather quadrangle, AK: U.S. Geological Survey Miscellaneous Field Study Map MF-436, 1 sheet, scale 1:250,000.
Cobb, E. H., 1981, Summaries of data and lists of references to metallic and selected nonmetallic mineral occurrences in the Mt. Fairweather quadrangle, Alaska, Supplement to Open-file Report 78-316: U. S. Geological Survey Open-File Report 81-249A, 20 p.
Cobb, E. H., 1981, Summaries of data and lists of references to metallic and selected non-metallic mineral occurrences in the Mt. Fairweather quadrangle, Alaska, Supplement to Open-file Report 78-316: U. S. Geological Survey Open-File Report 81-249B, 15 p.
Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.
|Reporters||C.C. Hawley (Hawley Resource Group)|
|Last report date||4/15/1999|