The Pyrite Lode is a molybdenum 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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Pyrite Lode MRDS details
Site Name
Primary: Pyrite Lode
Commodity
Primary: Molybdenum
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: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Molybdenite
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Geology): Age = Late Cretaceous or younger
Comment (Reference): Primary Reference = Elliott and others, 1978; Berg and others, 1988
Comment (Deposit): Model Name = Polymetallic vein? (Cox and Singer, 1986; model 22c)
Comment (Geology): Geologic Description = The Pyrite Lode prospect area is underlain by an assemblage of undivided Mesozoic or Paleozoic metamorphosed sedimentary, volcanic, and intrusive rocks; and by a stock and dikes of Cretaceous granodiorite and quartz diorite (Berg and others, 1988, p. 21, 22). The undivided assemblage was regionally metamorphosed to amphibolite grade in middle or Late Cretaceous time, and locally remetamorphosed to hornblende hornfels near the contacts of some of the granodiorite and quartz diorite plutons. ? the deposit consists of small pockets of molybdenite and pyrite in a quartz fissure vein in metamorphic rocks (Elliott and others, 1978). The Pyrite Lode was staked in 1953 (Maas and others, 1995, p. 266). No other information about this prospect has been made public.? Assuming that the vein cuts the foliation of the metamorphic rocks, it probably is younger than the middle or Late Cretaceous regional metamorphism.
Comment (Deposit): Other Comments = the property is in Misty Fiords National Monument Wilderness.
References
Reference (Deposit): U.S. Bureau of Mines, 1977, Claim map, Ketchikan quadrangle: U.S. Bureau of Mines Map 120, scale 1:250,000.
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): 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): Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.
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