The Thorpe 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.
Thorpe MRDS details
Site Name
Primary: Thorpe
Commodity
Primary: Gold
Secondary: Silver
Location
State: Alaska
District: Willow Creek
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
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: Silver
Gangue: Quartz
Comments
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Jurassic or younger; veins cut Jurassic pelitic schist.
Comment (Reference): Primary Reference = Ray, 1954
Comment (Production): Production Notes = Mining reported 1924-1925 and 1942-1943, amount of production not known.
Comment (Deposit): Other Comments = Thorpe is the only productive mine in the Willow Creek district in schist rather than intrusive rocks (Ray, 1954).
Comment (Workings): Workings / Exploration = Staked prior to 1924. Developed by several hundred feet of workings; open cuts and several adits, however only one crosscut was accessible in 1950. Reportedly a mill and tram were installed prior to 1942. Ray (1933) reported assays to show $25.92 Au (Au at $20.67/oz).
Comment (Geology): Geologic Description = Quartz stringers and veins up to 3.5 ft wide in shear zones that cut foliation and bedding of Jurassic (?) quartz-albite-chlorite (+/- garnet-biotite) pelitic schist bedrock. Veins strike N 50 W, and dips 53 NE (Ray, 1954). Shear zones at Thorpe mine have different attitudes from those of productive veins in tonalite commonly found in region. Veins in schist at Thorpe were the probable source of placer gold in Willow Creek and Grubstake Gulch. Assays show $25.92 Au (Au at $20.67/oz). The gold occurs principally as native metal, but it contains more silver than that from the veins (to the north) in the quartz diorite (Ray, 1933).
References
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): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Smith, P.S., 1942, Mineral industry of Alaska in 1940: U.S. Geological Survey Bulletin 933-A, p. 1-102.
Reference (Deposit): Moffit, F.H., 1927, Mineral industry in Alaska in 1925: U.S. Geological Survey Bulletin 792-A, p. 1-39.
Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in the Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.
Reference (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.
Reference (Deposit): Smith, P.S., 1942, Mineral Industry of Alaska in 1940: U. S. Geological Survey Bulletin 933-A, p. 1-102.
Reference (Deposit): Ray, R.G., 1954, Geology and ore deposits of the Willow Creek Mining district, Alaska: U.S. Geological Survey Bulletin 1004, 86 p.
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): Smith, P.S., 1926, Mineral industry of Alaska in 1924: U.S. Geological Survey Bulletin 783-A, p. 1-39.
Reference (Deposit): Smith, P.S., 1932, Mineral industry of Alaska in 1929, in Smith, P.S., and others Mineral resources of Alaska, report on progress of investigations in 1929: U.S. Geological Survey Bulletin 824-A, p. 1-81.
Reference (Deposit): Ray, J.C., 1933, The Willow Creek gold-lode district, Alaska: U.S. Geological Survey Bulletin 849-C, p. 165-229.
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.
