The Halibut Bay 51 is a chromium 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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Halibut Bay 51 MRDS details
Site Name
Primary: Halibut Bay 51
Commodity
Primary: Chromium
Location
State: Alaska
District: Kodiak
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: Podiform chromite (major)
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: The ultramafic country rock is serpentinized?
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chromite
Comments
Comment (Reserve-Resource): Reserves = the deposit is estimated to contain 6,031,000 tons of rock grading 5 percent chromite.
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = The deposit is estimated to contain 6,031,000 tons of rock grading 5 percent chromite. Head grades of bulk samples ranged from 23.2 to 42.1 percent chromite and gravity concentrate grades ranged from 51.6 to 56.1 percent, with chrome:iron ratios ranging from 2.1 to 3.0.
Comment (Reference): Primary Reference = Foley and Barker, 1985
Comment (Deposit): Model Name = Podiform chromite (Cox and Singer, 1986; model 8b).
Comment (Deposit): Other Comments = Site is located within Kodiak National Wildlife Refuge.
Comment (Geology): Geologic Description = This chromite occurrence, one of several located within the Halibut Bay ultramafic complex, consists of lenses or bands of disseminated, coalescent, and massive chromite alternating with nearly barren dunite. ?The mineralized zone is inferred to measure 1250 by 150 feet and to have an inferred dip length of 312 feet. The deposit is estimated to contain 6,031,000 tons of rock grading 5 percent chromite (Foley and Barker, 1985, table 13). Bulk sample head grades ranged from 23.2 to 42.1 percent chromite and gravity concentrate grades ranged from 51.6 to 56.1 percent. The concentrates gave a chrome:iron ratio ranging from 2.1 to 3.0, and contained traces of gold, silver, platinum, and palladium (Dahlin and others, 1985, tables A-31, A-32, A-33). ? the Halibut Bay ultramafic complex, consisting mostly of gabbro, dunite, pyroxenite, and peridodite, occurs within sedimentary units of the Uyak formation of Cretaceous age.
References
Reference (Deposit): Foley, J.Y., and Barker, J.C., 1985, Chromite deposits along the Border Ranges fault, part 1, Field investigations and descriptions of chromite deposits: U.S. Bureau of Mines Information Circular 8990, 58 p.
Reference (Deposit): Dahlin, D.C., Kirby, D.E., and Brown, L.L., 1985, Chromite deposits along the Border Ranges fault, southern Alaska, part 2, Mineralogy and results of beneficiation tests: U.S. Bureau of Mines Information Circular 8991, 37 p.
Reference (Deposit): Foley, J.Y., Burns, L.E., Schneider, C.L., and Forbes, R.B., 1989, Preliminary report of platinum group element occurrences in Alaska: Alaska Division of Geological and Geophysical Surveys Public Data File 89-20, 32 p., 1 map sheet, scale 1:2,500,000.
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