|Native name: Isla Guarello|
|Adjacent bodies of water||Pacific Ocean|
Guarello Island (Spanish: Isla Guarello) is an island in Madre de Dios Archipelago in Magallanes Region. Guarello Island is in a limestone area that also includes Madre de Dios Island. The island has the world's southernmost limestone mine and it has reserves for 100 years, and 600,000 tons of limestone with a millesimal fineness of 96% of Calcium carbonate are extracted each year. Half of the production is used in the steel mills of Huachipato which also owns the mines.
- Islands of Chile @ United Nations Environment Programme
- World island information @ WorldIslandInfo.com
- South America Island High Points above 1000 meters
- United States Hydrographic Office, South America Pilot (1916)
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