Duke Island
Native name:
G̠ilʼi Shakʼ
Duke Island in the center of a 1989 United States NOAA chart of Revillagigedo Channel
Duke Island in the center of a 1989 United States NOAA chart of Revillagigedo Channel
Duke Island is located in Alaska
Duke Island
Duke Island
Geography
LocationAlaska Panhandle
Coordinates54°55′51″N 131°20′44″W / 54.93083°N 131.34556°W / 54.93083; -131.34556
ArchipelagoAlexander Archipelago
Length19 km (11.8 mi)
Width13 km (8.1 mi)
Administration
United States
StateAlaska
BoroughKetchikan Gateway Borough

Duke Island (Tlingit: G̠ilʼi Shakʼ[1]) is an island in the Gravina Islands of the Alexander Archipelago in the southeastern part of the U.S. state of Alaska. The island is just north of the Canada–United States border. It is 19 kilometres (12 miles) long and 13 kilometres (8.1 miles) wide. It hosts an Alaskan-type ultramafic complex which is currently being explored for magmatic sulfide Cu-Ni-PGE deposits.[2]

The original name for the island in the Tlingit language is: Yeixhi (building), referring to it looking like something under construction when viewed from the waters around it.

The island was named by William Healey Dall in 1879. He probably took the name from the island's southern cape, which George Vancouver had named in 1793 after the Duke of Northumberland.[3]

References

  1. "Ketchikan Area Native Place Names" (PDF). Lingít Yoo X̲ʼatángi. Southeast Native Subsistence Commission Place Name Project. 1994–2001. pp. 101, 126. Retrieved 9 July 2023.
  2. Naldrett, A. J. (1 May 2010). "Secular Variation of Magmatic Sulfide Deposits and Their Source Magmas". Economic Geology. 105 (3): 669–688. doi:10.2113/gsecongeo.105.3.669. Retrieved 11 April 2017 via econgeol.geoscienceworld.org.
  3. U.S. Geological Survey Geographic Names Information System: Duke Island


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