The Unnamed (upper North Crillon Glacier) is a iron and titanium 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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Unnamed (upper North Crillon Glacier) MRDS details
Site Name
Primary: Unnamed (upper North Crillon Glacier)
Commodity
Primary: Iron
Primary: Titanium
Secondary: Copper
Location
State: Alaska
District: Yakutat
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: Bushveld Fe-Ti-V
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Ilmenite
Ore: Magnetite
Comments
Comment (Reference): Primary Reference = Rossman, 1963 (B 1121-F)
Comment (Geology): Age = Tertiary.
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = Surface exposures only. Several investigators, including Kennedy and Walton (1946), Rossman (1963 B 1121-F, MacKevett and others (1971), and Kimball and others (1978) reported occurrences of valuable oxide and sulfide minerals in the northwestern contact zone of the Mt. Crillon-LaPerouse complex in rugged country. There is extensive ice cover.
Comment (Deposit): Other Comments = the site is in Glacier Bay National Park and Preserve.
Comment (Geology): Geologic Description = The occurrence is in the northwestern part of the Crillon-LaPerouse layered mafic complex (Brew and others, 1978). It is probably about 0.4 miles from the contact of the intrusive, which, in this area, is concealed by the glacier. The occurrence, of heavily disseminated ilmenite in layered mafic rock, is marked by an extensive iron-stained zone. Samples collected by Rossman (1963, B 1121-F, p. F42-F43) from this area contained 7 to 10 percent ilmenite. (The location is somewhat uncertain; sample number 38b is the farthest north sampe locality shown by Rossman (1963) in the intrusion, but it has no analytical data. The location is very close to number 79 of MacKevett and others (1971). These authors cite Rossman, also Kennedy and Walton, 1946, for information on mineral occurrences at or near this site).
Comment (Deposit): Model Name = Similar to Bushveld Fe-Ti-V (Cox and Singer, 1986; model 3). Segregations of ilmenite-magnetite(?) in a in a layered mafic-ultramafic intrusion.
References
Reference (Deposit): Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.
Reference (Deposit): Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p.
Reference (Deposit): Kennedy, G.C. and Walton, M.S., Jr., 1946, Geology and associated mineral deposits of some ultrabasic rocks in southeastern Alaska: U.S. Geological Survey Bulletin 947-D, p. 65-84.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Mount Fairweather quadrangle, AK: U.S. Geological Survey Miscellaneous Field Study Map MF-436, 1 sheet, scale 1:250,000.
Reference (Deposit): MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.
Reference (Deposit): Rossman, Darwin, 1963, Geology and petrology of two stocks of layered gabbro in the Fairweather Range, Alaska: U.S. Geological Survey Bulletin 1121-F, p. F1-F50.
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