The Lucky Boy Extension is a zinc, lead, and copper 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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Lucky Boy Extension MRDS details
Site Name
Primary: Lucky Boy Extension
Secondary: Bear
Secondary: Adenac
Commodity
Primary: Zinc
Primary: Lead
Primary: Copper
Secondary: Tungsten
Location
State: Alaska
District: Hyder
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
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Pyrrhotite
Ore: Pyrite
Ore: Galena
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Scheelite
Gangue: Quartz
Comments
Comment (Deposit): Other Comments = Includes references to Lucky Bay (Cobb and Elliott, 1980, p. 69).
Comment (Geology): Age = Maas and others (1995, p. 254) suggest that the sulfide-bearing quartz fissure veins at the Adanac prospect are Eocene in age. If so, the age of the deposit is roughly contemporaneous with the emplacement of the Hyder Quartz Monzonite batholith.
Comment (Deposit): Model Name = Polymetallic veins (Cox and Singer, 1986; model 22c)
Comment (Geology): Geologic Description = The country rocks in the area of this site include: pelitic metasedimentary and subordinate andesitic metavolcanic strata of the Jurassic or Triassic Hazelton Group; recrystallized granodiorite of the Triassic Texas Creek Granodiorite, which intrudes the Hazelton rocks; quartz monzonite and granodiorite of the Hyder Quartz Monzonite batholith, which intrudes the Hazelton and Texas Creek rocks; and Tertiary lamprophyre dikes, which intrude all of the foregoing rock units (Buddington, 1929; Smith, 1973, l977; Berg and others, 1988).? the deposit is a quartz fissure vein and stringer lode, 6-16 inches thick, in a 2-3 foot shear zone in silicified(?) Hazelton slate (Buddington, 1929, p. 67; Cobb and Elliott, 1980, p. 69). The quartz contains pyrite, galena, and sphalerite, and traces of pyrrhotite and chalcopyrite. Byers and Sainsbury (1956, p. 140) report rare grains of scheelite, presumably in the quartz veins, at the Bear (Lucky Boy Extension) prospect. Buddington (1929, p. 67) describes about 100 feet of underground workings on the Lucky Boy Extension. Maas and others (1995, p. 262) report about 300 feet of underground workings on the Adanac vein, which they traced on the surface for about 150 feet.? Maas and others (1995, p. 254) suggest that the sulfide-bearing quartz fissure veins at the Adanac prospect are Eocene in age. If so, the age of the deposit is roughly contemporaneous with the emplacement of the Hyder Quartz Monzonite batholith.
Comment (Workings): Workings / Exploration = The Adenac prospect was explored in the early 1900s by about 300 feet of underground workings (Maas and others, 1995, p. 262). Samples collected by the U.S. Bureau of Mines in the early 1990s contained as much as 5.9 ppm Au, 605.1 ppm Ag, 1.61% Pb, and 1.75% Zn.
Comment (Reference): Primary Reference = Buddington, 1929 (B807); Cobb and Elliott, 1980
References
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.
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): 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): 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): Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p.
Reference (Deposit): Byers, F.M., and Sainsbury, C.L., 1956, Tungsten deposits of the Hyder district, Alaska: U.S. Geological Survey Bulletin 1024-F, p. 123-140.
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