Attractive pink and green gemmy terminated crystal of elbaite.Minas Gerais, Brazil, is globally renowned as one of the most important pegmatite provinces in the world, stretching primarily across the eastern and northeastern portions of the state. Geologically, these complex granitic pegmatites formed during the Neoproterozoic to early Paleozoic eras as a result of the regional Araçuai Orogeny, where intense metamorphic and tectonic activity forced volatile- and rare-element-rich melts into surrounding schist and gneiss formations. These conditions created wide zones containing giant crystal pockets rich in lithium, beryllium, tantalum, and gemstones. Historically, mining in the region began with colonial gold and diamond prospecting in the 17th and 18th centuries, but expanded dramatically into systematic pegmatite extraction during the 19th and 20th centuries, fueled by global demand for industrial minerals and exceptional gem specimens that continue to supply collectors and museums worldwide.
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