Commodities
PrimaryIron
SecondaryCobalt, Tin, Molybdenum, Copper
Commodity typeM
Materials
Ore mineralsChalcopyrite, Magnetite, Pyrite
GangueCalcite, Garnet, Quartz
Geology
Host rockMarble
AlterationCalc-rocks have been altered to tactite composed mainly of calcite, garnet, hornblende, pyroxene and quartz. Propylitic alteration of alaskite has introduced actinolite, calcite, chlorite, and epidote. Actinolite and chlorite, with plagioclase, have also formed in the alteration of the andesite dikes.
Economic & production
Development statusOccurrence
Identification
Deposit ID10002267
MRDS IDA013170
RegionNA
Data scoreC
Coordinates58.90362, -136.51405
References
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.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.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.