The Howard is a lead and zinc 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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Howard MRDS details
Site Name
Primary: Howard
Secondary: Helen
Commodity
Primary: Lead
Primary: Zinc
Secondary: Barium-Barite
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: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Early Jurassic
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Early Jurassic
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Barite
Ore: Galena
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Deposit): Model Name = Polymetallic veins (Cox and Singer, 1986; model 22c)
Comment (Deposit): Other Comments = Early reports also refer to prospect as Helen (Cobb and Elliott, 1980, p. 145).
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 (Smith, 1973, l977; Berg and others, 1988).? the Howard prospect is in (Texas Creek) granodiorite and consists of a shear zone that contains numerous quartz stringers, some of which contain barite, galena, pyrite, and sphalerite (Buddington, 1929, p. 76; Elliott and others, 1978, loc. 1; Cobb and Elliott, 1980, p. 58). One body of sulfide-bearing quartz is 10 feet long and 12-15 inches wide. Maas and others (1995, p. 254) suggest that sulfide-bearing quartz fissure veins in Texas Creek granodiorite in the Hyder district are Eocene in age.? the prospect was explored in the early 1900s by opencuts and stripping.
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Maas and others (1995, p. 254) suggest that sulfide-bearing quartz fissure veins in Texas Creek granodiorite in the Hyder District are Eocene.
Comment (Workings): Workings / Exploration = Prospect was explored in the early 1900s by opencuts and stripping.
Comment (Reference): Primary Reference = Buddington, 1929 (B807)
References
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): 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.
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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