The Unnamed (northwest Annette Island) is a gold 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
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 (northwest Annette Island) MRDS details
Site Name
Primary: Unnamed (northwest Annette Island)
Commodity
Primary: Gold
Secondary: Lead
Secondary: Copper
Location
State: Alaska
District: Ketchikan
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
Model Name: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Pyritization of argillic country rock.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Galena
Gangue: Quartz
Gangue: Calcite
Comments
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Workings): Workings / Exploration = A sample of a quartz vein contained 0.21 ppm Au; another sample contained 7 ppm Ag, 500 ppm As, and 16 ppm Sb (Karl, 1992, loc. 3a, b).
Comment (Reference): Primary Reference = Karl, 1992
Comment (Geology): Age = Probably Late Cretaceous or younger.
Comment (Geology): Geologic Description = The country rocks in the area of this site are chiefly Upper Jurassic or Cretaceous flyschlike metasedimentary rocks that are gradationally interbedded with subordinate andesitic or basaltic metatuff (Berg, 1972 [I 684]; Berg and others, 1988). The rocks were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. The occurrences consist of abundant quartz-calcite-pyrite veins that cut argillite, metagraywacke, and conglomerate (Karl, 1992, loc. 3). The veins enclose angular inclusions of greenstone and argillite, and some of the country rocks contain abundant disseminated pyrite. Some of the quartz veins contain chalcopyrite or galena in addition to the pyrite. A sample of a quartz vein contained 0.21 ppm Au; another sample contained 7 ppm Ag, 500 ppm As, and 16 ppm Sb (Karl, 1992, loc. 3a, b).
References
Reference (Deposit): Karl, S.M., 1992, Map and table of mineral deposits on Annette Island, Alaska: U.S. Geological Survey Open-File Report 92-690, 57 p., 1 map, scale 1:63,360.
Reference (Deposit): Berg, H.C., Elliott, R.L., and Koch, R.D., 1988, Geologic map of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Mineral Investigations Series Map MF-1807,27 p., scale 1:250,000.
Reference (Deposit): Berg, H.C., 1972, Geologic map of Annette Island, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-684, 8 p., 1 sheet, scale 1:63,360,
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.
