The Unnamed (near Skwentna River) is a gold, copper, silver, and lead mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation:
Commodity: Gold, Copper, Silver, Lead
Lat, Long: 61.96, -152.30000
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Unnamed (near Skwentna River) MRDS details
Site Name
Primary: Unnamed (near Skwentna River)
Commodity
Primary: Gold
Primary: Copper
Primary: Silver
Primary: Lead
Location
State: Alaska
District: Yentna
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Ore: Chalcopyrite
Ore: Galena
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Prospecting, rock sample assayed.
Comment (Reference): Primary Reference = Spurr, 1900
Comment (Geology): Geologic Description = Folded volcanic rocks are cut by granitic dioritic and syenitic dikes. Rock along contacts between dikes and volcanics are decomposed and iron stained (Spurr,1900, p. 110-112). Narrow quartz veins up to several inches wide are rich in pyrite, chalcopyrite and galena. Other zones near, but not at, contacts generally follow stratification, are similarly mineralized and contain gold and silver. Upstream, black slate is cut by granitic dikes; quartz veins carry pyrite, chalcopyrite and galena. Assay of sample with pyrite and chalcopyrite assayed 0.05 oz/ton gold and 0.15 oz/ton silver. Assay of a quartz vein sample returned 0.1 oz/ton gold and 0.25 oz/ton silver (Spurr, 1900, p.259). The basic reference was published in 1900; no more recent information is available.
Comment (Deposit): Other Comments = the basic reference was published in 1900; no more recent information is available.
Comment (Deposit): Model Name = Hydrothermal/contact metamorphic?, polymetallic vein?, disseminated?(MacKevett and Holloway, 1977)
Comment (Commodity): Ore Material = Gold (native)
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Spurr, J.E., 1900, A reconnaissance in southwestern Alaska in 1898: U.S. Geological Survey 20th Annual Report, part 7, p. 31-264.?
Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.
Reference (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.
Reference (Deposit): U.S. Bureau of Mines, 1998, Minerals Availability System/Minerals Industry Location System (MAS/MILS), Talkeetna Quadrangle: Worldwide Web URL http://imcg.wr.usgs.gov/data.html.
URL: http://imcg.wr.usgs.gov/data.html
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Tyonek quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-385, 1:250,000 scale.
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
