The Finger Bay is a gold, copper, and silver 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
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Finger Bay MRDS details
Site Name
Primary: Finger Bay
Commodity
Primary: Gold
Primary: Copper
Primary: Silver
Location
State: Alaska
District: Aleutians
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
Alteration Type: L
Alteration Text: Silicification of volcanic rocks and minor introduction of chlorite.
Rocks
Not available
Analytical Data
Not available
Materials
Gangue: Quartz
Comments
Comment (Reference): Primary Reference = Fraser and Snyder, 1959
Comment (Workings): Workings / Exploration = Two samples collected during U.S. Geological Survey field work in 1993. Sample 93AWs 101 (gabbro) contained 730 ppm Cu, 0.27 ppm Ag, and 4 ppb Au. Sample 93TL 101 (andesite) contained 2 ppb Au, and 150 ppm Cu (unpublished data, U.S. Geological Survey, 1994)
Comment (Geology): Geologic Description = Geologic map (Fraser and Snyder, 1959) shows locality is near contact where gabbro intrudes other volcanic rock units of the Finger Bay Volcanics. Two samples were collected, one gabbro, the other siliceous andesite(?) containing quartz phenocrysts(?) and sulfide minerals. The andesite is cut by thin stringers of quartz and some fracture/cleavage surfaces are coated with sulfide minerals. The gabbro is coarse-grained and sulfide mineral-bearing. The mineralization is thought to be associated with hydrothermal remobilization along the contact.
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Tertiary
References
Reference (Deposit): unpublished data, U.S. Geological Survey, 1994
Reference (Deposit): Fraser, G.D., and Snyder, G.L., 1959, Geology of southern Adak Island and Kagalaska Island, Alaska: U.S. Geological Survey Bulletin 1028-M, p. 371-408, 2 plates, scale 1:125,000.
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