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Basaltic andesite is a black volcanic rock containing about 55% silica. It is distinct from basalt and andesite in having a different percentage of silica content. Minerals in basaltic andesite include olivine, augite and plagioclase.[1] Basaltic andesite can be found in volcanoes around the world, including in Central America[2] and the Andes of South America.[3]
Silicon dioxide, Mars, Feldspathoid, Feldspar, Sodium
Argentina, Ecuador, Peru, Tin, Chile
Argentina, Colombia, Bolivia, Brazil, Peru
Mars, Sulfur, Curiosity rover, Oxygen, Iron
Basalt, Normative mineralogy, Feldspathoid, Volcanic rock, Rock microstructure
Alaska, Aleutian Islands, Smithsonian Institution, Amak Island, Stratovolcano
Canada, Garibaldi Volcanic Belt, British Columbia, Volcanism of Canada, Pacific Ranges