Iguana Green Granite - convoluted gneiss (or migmatite) from Brazil.
Gneiss is a common high-grade, foliated metamorphic rock characterized by alternating bands of light- and dark-colored minerals. It forms by metamorphism of schists or felsic-to-intermediate intrusive igneous rocks (e.g., granite).
Locality: attributed to a quarry near the town of Messias Targino, Rio Grande do Norte State, eastern Brazil
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