Mine detail: Mary Ann

Previously called ''

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Location

Lat / long:

61.81956, -149.18268

Resource(M)

Primary:	Gold
Ore:	Gold
Gangue:	Quartz

Production

Operation type:	Unknown
Development status:	Prospect

Geology

Alteration processes:

Wall-rock alteration within a few inches of the vein 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	A106234
DEP	10003476
Reference	{Deposit:: Chapin, Theodore, 1921, Lode developments in the Willow Creek district: U.S. Geological Survey Bulletin 714-E, p. 201-206.}{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.}
Reporter	S.W. Huss, D.P. Bickerstaff