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Columbite Crystal (Rio Arriba Co., New Mexico)

$36.00 USD

Columbite crystal; slightly radioactive (< 0.5 mr/hr), from the Big Bug claim, Petacca district, Rio Arriba County, New Mexico

Thumbnail specimen - About 0.75" x 0.45" x 0.25" (19mm x 11mm x 6mm)

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