|Quadrangle map, 1:250,000-scale||MF|
|Quadrangle map, 1:63,360-scale||C-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The occurrence is on the south wall of a glacier about 2.6 miles at 248 degrees (true azimuth) from Mt. Dagelet in extremely rugged country. Rossman (1963, p. F44) reported this locality as a prominent gossan similar to those observed over nickel-copper deposits on Yakobi Island in the Sitka D8 quadrangle (also see MF002). The gossan was not examined on the ground either by Rossman or, in 1977, by the U.S. Bureau of Mines (Kimball and others, 1978, p. C110-111). The location is probably within 0.2 mile of Rossman's observed gossan.|
Geologic descriptionGossan similar to that observed at the Yakobi Island nickel-copper deposits on the Sitka D-8 quadrangle was observed remotely by Rossman (1963). The site is in the Crillon-LaPerouse layered mafic-ultramafic pluton within about 0.3 mile of its southwestern contact with biotite-hornblende schist (Brew and others, 1978).
|Geologic map unit||(-137.229929129938, 58.5846337662022)|
|Mineral deposit model||Magmatic segregation.|
|Age of mineralization||Tertiary.|
|Alteration of deposit||Prominent iron-rich gossan.|
|Workings or exploration||Surface exposures, not examined on the ground.|
|Indication of production||None|
Additional commentsThe site is in Glacier Bay National Park and Preserve.
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., 7 sheets.
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.
|Reporters||C.C. Hawley (Hawley Resource Group)|
|Last report date||4/6/1999|