The Wildcat 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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Wildcat MRDS details
Site Name
Primary: Wildcat
Commodity
Primary: Gold
Secondary: Bismuth
Secondary: Copper
Secondary: Antimony
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: Past Producer
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: The wallrock adjacent to the vein is impregnated with sulfides.
Rocks
Name: Gabbro
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Pyrrhotite
Ore: Chalcopyrite
Ore: Gold
Gangue: Quartz
Comments
Comment (Geology): Age = Cretaceous or younger.
Comment (Geology): Geologic Description = This part of Revillagigedo Island is underlain mainly by marine, pelitic sedimentary rocks and andesitic or basaltic volcanic rocks that are intruded by Cretaceous stocks, sills, and dikes of feldspar-porphyritic granodiorite, and by a stock and probably related plugs of Tertiary gabbro (Berg and others, 1988). The strata were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. They subsequently were contact metamorphosed to hornblende hornfels: locally, near some of the Cretaceous granodiorite contacts, and, more widely, peripheral to the Tertiary gabbro. The premetamorphic age range of the strata is uncertain. Berg and others (1988) note that they closely resemble Upper Jurassic to mid-Cretaceous flysch and volcanic rocks nearby on Gravina Island. The country rocks are cut by a high-angle fault along Tongass Narrows that displays about 4 miles of right-lateral offset.? the Wildcat deposit consists of two sets of quartz fissure veins in a dioritic dike or sill (called syenite by Wright and Wright, 1908, p. 151-152) that cuts black slate-phyllite (Brooks, 1902, p. 61-62, Cobb and Elliott, 1980, p. 112). The older set, which is roughly parallel to the foliation of the slate-phyllite, contains pyrrhotite. The younger set, which crosscuts the metamorphic foliation, includes the principal vein, which contains free gold, pyrite, and minor chalcopyrite. This vein is up to about 16 inches thick, and was traced on the surface for more than 900 feet. The country rock adjacent to the vein contains disseminated sulfide minerals and, possibly, gold values. The prospect was explored in the early 1900s by opencuts and short tunnels and shafts. A 5-ton test shipment made at that time reportedly contained 1.0-1.5 ounce Au/ton; some gold probably was recovered from this shipment.? According to Brooks (1902, p. 61), a nearby [quartz fissure] vein carries pyrite and pyrite, and reportedly, antimony and bismuth.
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Deposit): Other Comments = Early reports note that the Wildcat deposit is similar to the one at the Hoadley prospect (KC065).
Comment (Production): Production Notes = A 5-ton test shipment made in the early 1900s reportedly contained 1.0-1.5 ounce Au/ton; some gold probably was recovered from this shipment.
Comment (Reference): Primary Reference = Brooks, 1902
Comment (Workings): Workings / Exploration = The prospect was explored in the early 1900s by opencuts and short tunnels and shafts. A 5-ton test shipment made at that time reportedly contained 1.0-1.5 ounce Au/ton; some gold probably was recovered from this shipment.
References
Reference (Deposit): Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p.
Reference (Deposit): Wright, F.E., and Wright, C.W., 1908, The Ketchikan and Wrangell mining districts, Alaska: U.S. Geological Survey Bulletin 347, 210 p.
Reference (Deposit): Elliott, R.L., Berg, H.C., and Karl, Susan, 1978, map and table describing metalliferous and selected nonmetalliferous mineral deposits, Ketchikan and Prince Rupert quadrangles, Alaska: U.S. Geological Survey Open-file Report, 78-73-B,17 p., scale 1:250,000.
Reference (Deposit): Cobb, E.H., and Elliott, R.L., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Ketchikan and Prince Rupert quadrangles, Alaska: U.S. Geological Survey Open-File Report 80-1053, 154 p.
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.
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