In the Aleutian Islands, at the SE end of Amchitka Island, 1 mi WSW of East Cape; Aleutia Islands.
HistoryNamed for the quartz diorite pluton found there.
Constantine Harbor, Kirilof Bay, North Bight, Pluton Cove, South Bight, Stone Beach Cove, Whale Cove,
Capes:Constantine Point, East Cape, Grampus Point, Ivakin Point, Kirilof Point, Omega Point, Pillow Point,
Islands:Lakes:Streams: