Columbite-Fe

specimen number:
2063215

location:
Governador Valadares, Minas Gerais, Brazil

description:
A fine sharp lustrous terminated crystal of columbite-Fe. In great condition all around. Choice crystal for the species. The specimen comes with a previous label from the collection of Ray DeMark.

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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