The Webfoot 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
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Webfoot MRDS details
Site Name
Primary: Webfoot
Secondary: Reed and Fiske
Secondary: Grimes
Commodity
Primary: Gold
Secondary: Copper
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: Prospect
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: Wall-rock alteration within a few inches of the veins 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). Sericitic alteration on vein margins (Kurtak, 1986).
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Ore: Malachite
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Vein explored by open cuts and about 300 ft of underground drifts. The ore is reported to be a large tonnage of low-grade material (Ray, 1954). Kurtak (1986) reported that a 2.5-ft-wide chip sample across a quartz vien on the edge of a stope contained 0.44 ppm (0.013 oz/ton) Au, while a surface exposure contained 0.21 ppm ( 0.006 oz/ton) Au.
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Ray, 1954
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Deposit): Other Comments = Capps (1915) refers to Webfoot or area very near Webfoot as the Grimes prospect and Katz (1911) uses the name Reed and Fiske.
Comment (Geology): Geologic Description = A 2.5 to 5 ft wide auriferous quartz vein cuts the Late Cretaceous Willow Creek Pluton. The vein strikes due north and dips 33 to 40 W (Ray, 1954). Malachite staining was noted on some the quartz in dump (Capps, 1915). Kurtak (1986) reported that a 2.5-ft-wide chip sample across a quartz vien on the edge of a stope contained 0.44 ppm (0.013 oz/ton) Au, while a surface exposure contained 0.21 ppm ( 0.006 oz/ton) Au.? the Willow Creek Pluton is a zoned pluton: the outer part consists of hornblende quartz diorite and lesser hornblende tonalite; the core consists of hornblende-biotite granodiorite, and lesser hornblende-biotite quartz monzodiorite and biotite quartz monzonite. Wall-rock alteration within a few inches of the veins 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).
Comment (Production): Production Notes = No record of production (Cobb, 1972).
Comment (Geology): Age = Late Cretaceous or younger; vein cuts the Late Cretaceous Willow Creek Pluton.
References
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): 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): Capps, S.R., 1919, Gold lode mining in the Willow Creek district: U.S. Geological Survey Bulletin 692-D, p. 177-186.
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): Capps, S.R., 1915, The Willow Creek District, Alaska: U.S. Geological Survey Bulletin 607, 86 p.
Reference (Deposit): Chapin, Theodore, 1920, Lode developments in the Willow Creek district: U.S. Geological Survey Bulletin 712-F, p. 169-176.
Reference (Deposit): Katz, F.J., 1911, A reconnaissance of Willow Creek gold region: U.S. Geological Survey Bulletin 480-G, p. 139-152.
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): Chapin, Theodore, 1921, Lode developments in the Willow Creek district: U.S. Geological Survey Bulletin 714-E, p. 201-206.
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): Kurtak, J.M., 1986, Results of the 1984 Bureau of Mines site specific field studies within the Willow Creek mining district: U.S. Bureau of Mines Open-File Report 17-86, 17 p.
Reference (Deposit): Capps, S.R., 1914, Gold lodes and placers of the Willow Creek district: U.S. Geological Survey Bulletin 592, p. 245-272.
Reference (Deposit): Brooks, A.H. and Capps, S.R., 1924, Mineral industry in Alaska, 1922: U.S. Geological Survey Bulletin 755, p. 1-56.
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