Tar Island
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Tar Island is an island near the town of Rockport in the Canadian waters of the St. Lawrence River, and a part of the Thousand Islands, a freshwater archipelago.
Tar Island is about three kilometers long and a third of a kilometer wide, and separated from the northern shore of the river by sixty meters.[1] It measures 262 acres (106 hectares) in area and 8.0 kilometers (5.0 miles) in perimeter. Situated on a small unnamed island near the head of Tar Island is an automatic lighthouse directing traffic for the Canadian Middle Channel of the St. Lawrence.[2]
Natural history
A large deposit of black tourmaline is located just southeast of the island,[1][3] intermixed with white quartz, cream colored feldspar, and green-yellow mica.[4] The waters around Tar Island are home to American eel, now endangered.[5]