The Le Blondeau is a silver and 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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Le Blondeau MRDS details
Site Name
Primary: Le Blondeau
Commodity
Primary: Silver
Primary: Gold
Secondary: Cobalt
Location
State: Alaska
District: Juneau (Skagway subdistrict)
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: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrrhotite
Gangue: Quartz
Comments
Comment (Geology): Age = the age is unknown but is probably Cretaceous or younger based on the age of a nearby intrusion (MacKevett and others, 1974; Gilbert, 1988).
Comment (Reference): Primary Reference = Still and others, 1991
Comment (Deposit): Model Name = There is little information but Still and others (1991) refer to polymetallic veins in dikes and adjacent metacherts (Cox and Singer, 1986; model 22c).
Comment (Exploration): Status = Active?
Comment (Geology): Geologic Description = According to Still and others (1991), this prospect consists of irregular quartz veins up to 0.8 feet wide and 50 feet long that are exposed near the face of the retreating Le Blondeau Glacier. The veins cut bedding and are hosted in dikes and metachert. Vein samples contain up to 1.561 ppm gold, 2.4 ppm silver, and 251 ppm cobalt . The veins are probably of Cretaceous age or younger based on the age of a nearby quartz diorite to granodiorite intrusion (MacKevett and others, 1974; Gilbert, 1988). Still and others (1991) also note that 'The snout of this (Le Blondeau) glacier is the site of some limited placer activity, including the staking of placer claims' but there is no record of any significant production.
References
Reference (Deposit): Still, J.C., Hoekzema, R.B., Bundtzen, T.K., Gilbert, W.G., Wier, K.R., Burns, L.E., and Fechner, S.A., 1991, Economic geology of Haines-Klukwan-Porcupine area, southeastern Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 91-4, 156 p., 5 sheets, scale 1:63,360.
Reference (Deposit): Gilbert, W.G., Still, J.C., Burns, L.E., Wier, K.R., and Redman, E.C., 1991, Geochemistry of Haines-Klukwan-Porcupine area, southeastern Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 91-5, 1 sheet, scale 1:63,360, 75 p.
Reference (Deposit): MacKevett, E.M., Jr., Robertson, E.C., and Winkler, G.R., 1974, Geology of the Skagway B-3 and B-4 quadrangles, southern Alaska: U.S. Geological Survey Professional Paper 832, 33 p.
Reference (Deposit): Gilbert, W.G., 1988, Preliminary geology and geochemistry of the north Chilkat Range: Alaska Division of Geological and Geophysical Surveys Report of Investigations 88-8, 2 sheets, scale 1:36,200.
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