The Hannum is a zinc and lead 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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Hannum MRDS details
Site Name
Primary: Hannum
Commodity
Primary: Zinc
Primary: Lead
Secondary: Arsenic
Secondary: Barium-Barite
Location
State: Alaska
District: Fairhaven
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Development of silica-rich rock is characteristic. The deposit is deeply weathered and oxidized.
Rocks
Role: Host
Age Type: Host Rock
Age Young: Early Devonian
Age Old: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Galena
Ore: Sphalerite
Gangue: Calcite
Gangue: Limonite
Gangue: Pyrite
Gangue: Quartz
Gangue: Arsenopyrite
Gangue: Barite
Comments
Comment (Workings): Workings / Exploration = Dozer trenching along the west bank of Hannum Creek is extensive; it totals about 1,500 feet in at least 6 different trenches. Mineralization was only locally exposed; a 30 foot-wide gossan zone within marble is exposed in one trench.
Comment (Geology): Geologic Description = A poorly exposed, interlayered metasedimentary schist and dolomitic marble sequence strikes northwest and dips moderately (15 to 65 degrees) to the north in the general area. Part of this meatsedimentary sequence is siliceous and described as quartzite (Herried, 1966). Herried considers the quartzite here and at Harrys Creek (BN055), 4,000 feet to the northwest, to be replacements of marble (silicified marble). Hudson and others (1977) described outcrops of the silica-rich rock on Harrys Creek as siliceous schist. The frozen ground in the Hannum prospect area has handicapped efforts to expose bedrock (Mulligan, 1965; Herreid, 1966). Although dozer trenching along the west bank of Hannum Creek is extensive (totalling about 1,500 feet in at least 6 different trenches) mineralization was only locally exposed; a 30 foot-wide gossan zone within marble is exposed in one trench. Mineralization is apparently pods and stringers of sulfides (primarily galena, sphalerite and pyrite) in silica-rich rock. An assay of a 6-foot wide siliceous zone contained 0.05 % Cu, 0.38 % Zn, and 0.12 % Pb, and nil amounts of Ag and Au (Herried, 1966, Table 1). Soil samples collected upslope 125 to 375 feet to the west, contained anomalous lead and zinc values (to greater than 1,000 ppm); soil samples in this prospect area commonly contain more anomalous zinc than lead values (Herreid, 1966, Table 2). Although continuity of mineralization over the 4,000 feet of strike length between the Hannum prospect and Harrys Creek (BN055) to the west is possible, it has not been demonstrated.
Comment (Geology): Age = Similar host rocks in this area are Silurian - Cambrian.
Comment (Exploration): Status = Active?
Comment (Geology): Age = The deposit may be epigenetic and younger than the host metasedimentary rocks. Epigenetic deposits on Seward Peninsula are primarily Cretaceous in age, a time of significant regional metamorphism and granitic plutonism. The Inmachuk River and many of its tributaries, including Cunningham and Hannum Creeks, contain signficant placer gold deposits. Some lode gold deposits on southern Seward Peninsula are mid-Cretaceous in age (see Midnight Mountain, BN047). If the deposit is stratiform, it may be similar in age to its host sedimentary rocks. The protoliths for the metasedimentary rocks in this area are lower Paleozoic in age (Till and others, 1986).
Comment (Reference): Primary Reference = Herried, 1966
Comment (Deposit): Model Name = Sulfide-bearing pods and disseminations in silica-rich metasedimentary rocks; it is not clear whether this is a recrystallized stratiform deposit or an epigenetic deposit much younger than its host rocks
References
Reference (Deposit): Herried, G.H., 1965, Geology of the Omilak-Otter Creek area, Bendeleben quadrangle, Alaska: Alaska Division of Mines and Minerals Geological Report 11, 12 p.
Reference (Deposit): Mulligan, J.J., 1965, Examination of the Hannum lead prospect, Fairhaven district, Seward Peninsula, Alaska: U.S. Bureau of Mines Open-File Report 6-65, 16 p.
Reference (Deposit): Hudson, T.L., Miller, M. L., and Pickthorn, W. J., 1977, Map showing metalliferous and selected nonmetalliferous mineral deposits, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 77-796-B, 46 p., one sheet, scale 1:1,000,000.
Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Bendeleben quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-417, 1 sheet, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bendeleben quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-429, 123 p.
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