ANDESITA
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La roca volcánica (o lava) es característicamente de color medio oscuro y contiene entre un 54 y un 62% de sílice y cantidades moderadas de hierro y magnesio.
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Since 2021 VOLCANO ACTIVE FOUNDATION has been committed to the UN Global Compact corporate responsibility initiative and its principles in the areas of human rights, labour, the environment and anti-corruption.
