Mine detail: Eldorado

Previously called 'Alaska Free Gold Mining Co.'

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Location

Lat / long:

61.7815, -149.29268

Resource(M)

Primary:	Gold
Ore:	Gold
Gangue:	Quartz

Production

Operation type:	Unknown
Development status:	Past Producer

Geology

Alteration processes:

The vein and host are oxidized to depths of 30 ft (Capps, 1915). Wall-rock alteration within a few inches of the veins is intense, but seldom extends more than 10 to 12 inches beyond the quartz filling. Sericitization and carbonate alteration predominate, but there is some pyritization and in the outer parts of the alteration zone chloritization is present (Ray, 1954).

References

MRDS	A011612
DEP	10000941
Reference	{Deposit:: Capps, S.R., 1915, The Willow Creek District, Alaska: U.S. Geological Survey Bulletin 607, 86 p.}{Deposit:: Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000.}{Deposit:: MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.}{Deposit:: Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.}{Deposit:: Stoll, W.M., 1997, Hunting for gold in Alask * Talkeetna Mountains 1897-1951: Greensburg, Pennsylvania, Henry Printing, 301 p.}
Reporter	S.W. Huss, D.P. Bickerstaff