A type of granitic igneous rock that falls between diorite and granite in composition.
From 'andesite' combined with '-ite' (a geological suffix meaning stone). The name references the Andes mountains where similar rocks are found, creating a classification within igneous rock taxonomy.
Andorite sits right in the Goldilocks zone of granite formation—not quite as iron-rich as diorite, not quite as silica-heavy as true granite, making it a kind of 'intermediate' rock that geologists use to understand how magma cools at different temperatures.
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